From e87f8a4a00a1cf56c79a067b8f115988a911bae1 Mon Sep 17 00:00:00 2001
From: David Pang <cookiefactory@gmail.com>
Date: Mon, 23 Sep 2024 13:00:42 -0400
Subject: [PATCH] updated all dependency versions and relevant api usage.
 bumped java to 21

---
 pom.xml                                       | 417 +++++++++---------
 ta4j-core/pom.xml                             |  10 +-
 ta4j-examples/pom.xml                         |   8 +-
 .../analysis/BuyAndSellSignalsToChart.java    |   6 +-
 .../analysis/CashFlowToChart.java             |  11 +-
 .../indicators/CandlestickChart.java          |   6 +-
 .../CandlestickChartWithChopIndicator.java    |   6 +-
 .../indicators/IndicatorsToChart.java         |   8 +-
 .../ta4jexamples/loaders/CsvBarsLoader.java   |  35 +-
 .../ta4jexamples/loaders/CsvTradesLoader.java |  25 +-
 10 files changed, 268 insertions(+), 264 deletions(-)

diff --git a/pom.xml b/pom.xml
index f408a9a0..13f2635c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,210 +1,213 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	<modelVersion>4.0.0</modelVersion>
-	<groupId>org.ta4j</groupId>
-	<artifactId>ta4j-parent</artifactId>
-	<version>0.16-CF</version>
-	<packaging>pom</packaging>
-
-	<name>Ta4j Parent</name>
-	<description>ta4j is a Java library providing a simple API for technical analysis.</description>
-	<url>http://github.com/ta4j/ta4j</url>
-	<inceptionYear>2014</inceptionYear>
-
-	<developers>
-		<developer>
-			<name>Marc de Verdelhan</name>
-		</developer>
-		<developer>
-			<name>Simon-Justus Wimmer</name>
-		</developer>
-	</developers>
-
-	<licenses>
-		<license>
-			<name>MIT License</name>
-			<comments>All source code is under the MIT license.</comments>
-		</license>
-	</licenses>
-
-	<issueManagement>
-		<system>GitHub</system>
-		<url>http://github.com/ta4j/ta4j/issues</url>
-	</issueManagement>
-
-	<distributionManagement>
-		<snapshotRepository>
-			<id>sonatype-nexus-snapshots</id>
-			<name>Sonatype Nexus snapshot repository</name>
-			<url>https://oss.sonatype.org/content/repositories/snapshots</url>
-		</snapshotRepository>
-		<repository>
-			<id>sonatype-nexus-staging</id>
-			<name>Sonatype Nexus release repository</name>
-			<url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
-		</repository>
-	</distributionManagement>
-
-	<ciManagement>
-		<url>http://travis-ci.org/ta4j/ta4j</url>
-	</ciManagement>
-
-	<scm>
-		<connection>scm:git:git://github.com/ta4j/ta4j.git</connection>
-		<developerConnection>scm:git:git@github.com:ta4j/ta4j.git</developerConnection>
-		<url>http://github.com/ta4j/ta4j</url>
-		<tag>0.14</tag>
-	</scm>
-
-	<modules>
-		<module>ta4j-core</module>
-		<module>ta4j-examples</module>
-	</modules>
-
-	<properties>
-		<!-- Encoding -->
-		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-	</properties>
-
-	<dependencyManagement>
-		<dependencies>
-			<dependency>
-				<groupId>ch.qos.logback</groupId>
-				<artifactId>logback-classic</artifactId>
-				<version>1.2.3</version>
-			</dependency>
-		</dependencies>
-	</dependencyManagement>
-
-	<profiles>
-
-		<!-- Only when performing a release (i.e. not for snapshots) -->
-		<profile>
-			<id>sonatype-oss-release</id>
-			<build>
-				<plugins>
-					<plugin>
-						<groupId>org.sonatype.plugins</groupId>
-						<artifactId>nexus-staging-maven-plugin</artifactId>
-						<version>1.6.13</version>
-						<extensions>true</extensions>
-						<configuration>
-							<!-- The Base URL of Nexus instance where we want to stage -->
-							<nexusUrl>https://oss.sonatype.org/</nexusUrl>
-							<!-- The server "id" element from settings to use authentication from -->
-							<serverId>sonatype-nexus-staging</serverId>
-						</configuration>
-					</plugin>
-
-					<plugin>
-						<groupId>org.apache.maven.plugins</groupId>
-						<artifactId>maven-javadoc-plugin</artifactId>
-						<version>3.2.0</version>
-						<configuration>
-							<doclint>none</doclint>
-						</configuration>
-						<executions>
-							<execution>
-								<id>attach-javadocs</id>
-								<goals>
-									<goal>jar</goal>
-								</goals>
-							</execution>
-						</executions>
-					</plugin>
-
-					<!-- Artifact signing -->
-					<plugin>
-						<groupId>org.apache.maven.plugins</groupId>
-						<artifactId>maven-gpg-plugin</artifactId>
-						<version>1.5</version>
-						<executions>
-							<execution>
-								<id>sign-artifacts</id>
-								<phase>verify</phase>
-								<goals>
-									<goal>sign</goal>
-								</goals>
-							</execution>
-						</executions>
-					</plugin>
-				</plugins>
-			</build>
-		</profile>
-
-	</profiles>
-
-	<build>
-		<plugins>
-
-			<!-- Build source and target -->
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.7.0</version>
-				<configuration>
-					<source>17</source>
-					<target>17</target>
-					<showDeprecation>true</showDeprecation>
-					<showWarnings>true</showWarnings>
-				</configuration>
-			</plugin>
-			<!-- Package sources -->
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-source-plugin</artifactId>
-				<version>2.2.1</version>
-				<executions>
-					<execution>
-						<id>attach-sources</id>
-						<goals>
-							<goal>jar-no-fork</goal>
-						</goals>
-					</execution>
-				</executions>
-			</plugin>
-
-			<!-- License headers -->
-			<plugin>
-				<groupId>com.mycila</groupId>
-				<artifactId>license-maven-plugin</artifactId>
-				<version>3.0</version>
-				<configuration>
-					<header>LICENSE</header>
-					<includes>
-						<include>**/*.java</include>
-					</includes>
-				</configuration>
-			</plugin>
-
-			<!-- Source formatter -->
-			<plugin>
-				<groupId>net.revelc.code.formatter</groupId>
-				<artifactId>formatter-maven-plugin</artifactId>
-				<version>2.10.0</version>
-					<configuration>
-						<configFile>${project.basedir}/code-formatter.xml</configFile>
-					</configuration>
-			</plugin>
-
-			<!-- Releases -->
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-release-plugin</artifactId>
-				<version>2.5.1</version>
-				<configuration>
-					<tagNameFormat>@{project.version}</tagNameFormat>
-				</configuration>
-				<dependencies>
-					<dependency>
-						<groupId>org.apache.maven.shared</groupId>
-						<artifactId>maven-invoker</artifactId>
-						<version>2.2</version>
-					</dependency>
-				</dependencies>
-			</plugin>
-
-		</plugins>
-	</build>
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.ta4j</groupId>
+    <artifactId>ta4j-parent</artifactId>
+    <version>0.16-CF</version>
+    <packaging>pom</packaging>
+
+    <name>Ta4j Parent</name>
+    <description>ta4j is a Java library providing a simple API for technical analysis.</description>
+    <url>http://github.com/ta4j/ta4j</url>
+    <inceptionYear>2014</inceptionYear>
+
+    <developers>
+        <developer>
+            <id>mdeverdelhan</id>
+            <name>Marc de Verdelhan</name>
+        </developer>
+        <developer>
+            <id>team172011</id>
+            <name>Simon-Justus Wimmer</name>
+        </developer>
+    </developers>
+
+    <licenses>
+        <license>
+            <name>MIT License</name>
+            <comments>All source code is under the MIT license.</comments>
+        </license>
+    </licenses>
+
+    <issueManagement>
+        <system>GitHub</system>
+        <url>http://github.com/TheCookieLab/ta4j/issues</url>
+    </issueManagement>
+
+    <distributionManagement>
+        <snapshotRepository>
+            <id>sonatype-nexus-snapshots</id>
+            <name>Sonatype Nexus snapshot repository</name>
+            <url>https://oss.sonatype.org/content/repositories/snapshots</url>
+        </snapshotRepository>
+        <repository>
+            <id>sonatype-nexus-staging</id>
+            <name>Sonatype Nexus release repository</name>
+            <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
+        </repository>
+    </distributionManagement>
+
+    <ciManagement>
+        <url>http://travis-ci.org/TheCookieLab/ta4j</url>
+    </ciManagement>
+
+    <scm>
+        <connection>scm:git:git://github.com/TheCookieLab/ta4j.git</connection>
+        <developerConnection>scm:git:git@github.com:TheCookieLab/ta4j.git</developerConnection>
+        <url>http://github.com/TheCookieLab/ta4j</url>
+        <tag>0.16-CF</tag>
+    </scm>
+
+    <modules>
+        <module>ta4j-core</module>
+        <module>ta4j-examples</module>
+    </modules>
+
+    <properties>
+        <!-- Encoding -->
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>ch.qos.logback</groupId>
+                <artifactId>logback-classic</artifactId>
+                <version>1.5.6</version>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <profiles>
+
+        <!-- Only when performing a release (i.e. not for snapshots) -->
+        <profile>
+            <id>sonatype-oss-release</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.sonatype.plugins</groupId>
+                        <artifactId>nexus-staging-maven-plugin</artifactId>
+                        <version>1.7.0</version>
+                        <extensions>true</extensions>
+                        <configuration>
+                            <!-- The Base URL of Nexus instance where we want to stage -->
+                            <nexusUrl>https://oss.sonatype.org/</nexusUrl>
+                            <!-- The server "id" element from settings to use authentication from -->
+                            <serverId>sonatype-nexus-staging</serverId>
+                        </configuration>
+                    </plugin>
+
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-javadoc-plugin</artifactId>
+                        <version>3.8.0</version>
+                        <configuration>
+                            <doclint>none</doclint>
+                        </configuration>
+                        <executions>
+                            <execution>
+                                <id>attach-javadocs</id>
+                                <goals>
+                                    <goal>jar</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+
+                    <!-- Artifact signing -->
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-gpg-plugin</artifactId>
+                        <version>3.2.6</version>
+                        <executions>
+                            <execution>
+                                <id>sign-artifacts</id>
+                                <phase>verify</phase>
+                                <goals>
+                                    <goal>sign</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+
+    </profiles>
+
+    <build>
+        <plugins>
+
+            <!-- Build source and target -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.13.0</version>
+                <configuration>
+                    <source>21</source>
+                    <target>21</target>
+                    <release>21</release>
+                    <showDeprecation>true</showDeprecation>
+                    <showWarnings>true</showWarnings>
+                </configuration>
+            </plugin>
+            <!-- Package sources -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-source-plugin</artifactId>
+                <version>3.3.1</version>
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <goals>
+                            <goal>jar-no-fork</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <!-- License headers -->
+            <plugin>
+                <groupId>com.mycila</groupId>
+                <artifactId>license-maven-plugin</artifactId>
+                <version>4.5</version>
+                <configuration>
+                    <header>LICENSE</header>
+                    <includes>
+                        <include>**/*.java</include>
+                    </includes>
+                </configuration>
+            </plugin>
+
+            <!-- Source formatter -->
+            <plugin>
+                <groupId>net.revelc.code.formatter</groupId>
+                <artifactId>formatter-maven-plugin</artifactId>
+                <version>2.10.0</version>
+                <configuration>
+                    <configFile>${project.basedir}/code-formatter.xml</configFile>
+                </configuration>
+            </plugin>
+
+            <!-- Releases -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-release-plugin</artifactId>
+                <version>3.1.1</version>
+                <configuration>
+                    <tagNameFormat>@{project.version}</tagNameFormat>
+                </configuration>
+                <dependencies>
+                    <dependency>
+                        <groupId>org.apache.maven.shared</groupId>
+                        <artifactId>maven-invoker</artifactId>
+                        <version>3.3.0</version>
+                    </dependency>
+                </dependencies>
+            </plugin>
+
+        </plugins>
+    </build>
 
 </project>
diff --git a/ta4j-core/pom.xml b/ta4j-core/pom.xml
index 4132618c..5f163ffb 100644
--- a/ta4j-core/pom.xml
+++ b/ta4j-core/pom.xml
@@ -16,14 +16,14 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<version>1.7.25</version>
+			<version>2.0.13</version>
 		</dependency>
 
 		<!-- Test dependencies -->
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>
-			<version>4.13.1</version>
+			<version>4.13.2</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
@@ -35,7 +35,7 @@
 		<dependency>
 			<groupId>org.apache.poi</groupId>
 			<artifactId>poi</artifactId>
-			<version>5.2.2</version>
+			<version>5.3.0</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
@@ -49,7 +49,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-jar-plugin</artifactId>
-				<version>3.1.0</version>
+				<version>3.4.1</version>
 				<configuration>
 					<archive>
 						<manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
@@ -59,7 +59,7 @@
 			<plugin>
 				<groupId>biz.aQute.bnd</groupId>
 				<artifactId>bnd-maven-plugin</artifactId>
-				<version>3.3.0</version>
+				<version>6.4.0</version>
 				<executions>
 					<execution>
 						<id>default-bnd-process</id>
diff --git a/ta4j-examples/pom.xml b/ta4j-examples/pom.xml
index 2b31d00a..9e7539f3 100644
--- a/ta4j-examples/pom.xml
+++ b/ta4j-examples/pom.xml
@@ -16,7 +16,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.13.1</version>
+            <version>4.13.2</version>
             <scope>test</scope>
         </dependency>
 
@@ -29,13 +29,13 @@
         <dependency>
             <groupId>com.opencsv</groupId>
             <artifactId>opencsv</artifactId>
-            <version>3.9</version>
+            <version>5.9</version>
         </dependency>
 
         <dependency>
             <groupId>org.jfree</groupId>
             <artifactId>jfreechart</artifactId>
-            <version>1.0.17</version>
+            <version>1.5.5</version>
         </dependency>
 
         <dependency>
@@ -46,7 +46,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.6</version>
+            <version>2.10.1</version>
         </dependency>
     </dependencies>
 
diff --git a/ta4j-examples/src/main/java/ta4jexamples/analysis/BuyAndSellSignalsToChart.java b/ta4j-examples/src/main/java/ta4jexamples/analysis/BuyAndSellSignalsToChart.java
index 09139f18..eb20bc08 100644
--- a/ta4j-examples/src/main/java/ta4jexamples/analysis/BuyAndSellSignalsToChart.java
+++ b/ta4j-examples/src/main/java/ta4jexamples/analysis/BuyAndSellSignalsToChart.java
@@ -36,10 +36,10 @@
 import org.jfree.chart.plot.Marker;
 import org.jfree.chart.plot.ValueMarker;
 import org.jfree.chart.plot.XYPlot;
+import org.jfree.chart.ui.ApplicationFrame;
+import org.jfree.chart.ui.UIUtils;
 import org.jfree.data.time.Minute;
 import org.jfree.data.time.TimeSeriesCollection;
-import org.jfree.ui.ApplicationFrame;
-import org.jfree.ui.RefineryUtilities;
 import org.ta4j.core.Bar;
 import org.ta4j.core.BarSeries;
 import org.ta4j.core.BarSeriesManager;
@@ -125,7 +125,7 @@ private static void displayChart(JFreeChart chart) {
         ApplicationFrame frame = new ApplicationFrame("Ta4j example - Buy and sell signals to chart");
         frame.setContentPane(panel);
         frame.pack();
-        RefineryUtilities.centerFrameOnScreen(frame);
+        UIUtils.centerFrameOnScreen(frame);
         frame.setVisible(true);
     }
 
diff --git a/ta4j-examples/src/main/java/ta4jexamples/analysis/CashFlowToChart.java b/ta4j-examples/src/main/java/ta4jexamples/analysis/CashFlowToChart.java
index fdb0c769..95eca5de 100644
--- a/ta4j-examples/src/main/java/ta4jexamples/analysis/CashFlowToChart.java
+++ b/ta4j-examples/src/main/java/ta4jexamples/analysis/CashFlowToChart.java
@@ -35,10 +35,11 @@
 import org.jfree.chart.axis.NumberAxis;
 import org.jfree.chart.plot.XYPlot;
 import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
+import org.jfree.chart.ui.ApplicationFrame;
+import org.jfree.chart.ui.UIUtils;
 import org.jfree.data.time.Minute;
 import org.jfree.data.time.TimeSeriesCollection;
-import org.jfree.ui.ApplicationFrame;
-import org.jfree.ui.RefineryUtilities;
+
 import org.ta4j.core.Bar;
 import org.ta4j.core.BarSeries;
 import org.ta4j.core.BarSeriesManager;
@@ -62,7 +63,7 @@ public class CashFlowToChart {
      *
      * @param barSeries the ta4j bar series
      * @param indicator the indicator
-     * @param name      the name of the chart time series
+     * @param name the name of the chart time series
      * @return the JFreeChart time series
      */
     private static org.jfree.data.time.TimeSeries buildChartBarSeries(BarSeries barSeries, Indicator<Num> indicator,
@@ -79,7 +80,7 @@ private static org.jfree.data.time.TimeSeries buildChartBarSeries(BarSeries barS
     /**
      * Adds the cash flow axis to the plot.
      *
-     * @param plot    the plot
+     * @param plot the plot
      * @param dataset the cash flow dataset
      */
     private static void addCashFlowAxis(XYPlot plot, TimeSeriesCollection dataset) {
@@ -108,7 +109,7 @@ private static void displayChart(JFreeChart chart) {
         ApplicationFrame frame = new ApplicationFrame("Ta4j example - Cash flow to chart");
         frame.setContentPane(panel);
         frame.pack();
-        RefineryUtilities.centerFrameOnScreen(frame);
+        UIUtils.centerFrameOnScreen(frame);
         frame.setVisible(true);
     }
 
diff --git a/ta4j-examples/src/main/java/ta4jexamples/indicators/CandlestickChart.java b/ta4j-examples/src/main/java/ta4jexamples/indicators/CandlestickChart.java
index 2b5cd2bc..dce83736 100644
--- a/ta4j-examples/src/main/java/ta4jexamples/indicators/CandlestickChart.java
+++ b/ta4j-examples/src/main/java/ta4jexamples/indicators/CandlestickChart.java
@@ -34,12 +34,12 @@
 import org.jfree.chart.plot.XYPlot;
 import org.jfree.chart.renderer.xy.CandlestickRenderer;
 import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
+import org.jfree.chart.ui.ApplicationFrame;
+import org.jfree.chart.ui.UIUtils;
 import org.jfree.data.time.Second;
 import org.jfree.data.time.TimeSeriesCollection;
 import org.jfree.data.xy.DefaultHighLowDataset;
 import org.jfree.data.xy.OHLCDataset;
-import org.jfree.ui.ApplicationFrame;
-import org.jfree.ui.RefineryUtilities;
 import org.ta4j.core.Bar;
 import org.ta4j.core.BarSeries;
 import org.ta4j.core.indicators.helpers.ClosePriceIndicator;
@@ -114,7 +114,7 @@ private static void displayChart(JFreeChart chart) {
         ApplicationFrame frame = new ApplicationFrame("Ta4j example - Candlestick chart");
         frame.setContentPane(panel);
         frame.pack();
-        RefineryUtilities.centerFrameOnScreen(frame);
+        UIUtils.centerFrameOnScreen(frame);
         frame.setVisible(true);
     }
 
diff --git a/ta4j-examples/src/main/java/ta4jexamples/indicators/CandlestickChartWithChopIndicator.java b/ta4j-examples/src/main/java/ta4jexamples/indicators/CandlestickChartWithChopIndicator.java
index b050b82c..c4ba2d52 100644
--- a/ta4j-examples/src/main/java/ta4jexamples/indicators/CandlestickChartWithChopIndicator.java
+++ b/ta4j-examples/src/main/java/ta4jexamples/indicators/CandlestickChartWithChopIndicator.java
@@ -40,13 +40,13 @@
 import org.jfree.chart.plot.XYPlot;
 import org.jfree.chart.renderer.xy.CandlestickRenderer;
 import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
+import org.jfree.chart.ui.ApplicationFrame;
+import org.jfree.chart.ui.UIUtils;
 import org.jfree.data.time.Second;
 import org.jfree.data.time.TimeSeriesCollection;
 import org.jfree.data.xy.DefaultHighLowDataset;
 import org.jfree.data.xy.OHLCDataset;
 import org.jfree.data.xy.XYDataset;
-import org.jfree.ui.ApplicationFrame;
-import org.jfree.ui.RefineryUtilities;
 import org.ta4j.core.Bar;
 import org.ta4j.core.BarSeries;
 import org.ta4j.core.indicators.ChopIndicator;
@@ -201,7 +201,7 @@ private static void displayChart(XYDataset ohlcDataset, XYDataset xyDataset, XYD
         ApplicationFrame frame = new ApplicationFrame("Ta4j example - Candlestick chart");
         frame.setContentPane(combinedChartPanel);
         frame.pack();
-        RefineryUtilities.centerFrameOnScreen(frame);
+        UIUtils.centerFrameOnScreen(frame);
         frame.setVisible(true);
 
         // CHOP oscillator upper/lower threshold guidelines
diff --git a/ta4j-examples/src/main/java/ta4jexamples/indicators/IndicatorsToChart.java b/ta4j-examples/src/main/java/ta4jexamples/indicators/IndicatorsToChart.java
index b2093cac..42d757d0 100644
--- a/ta4j-examples/src/main/java/ta4jexamples/indicators/IndicatorsToChart.java
+++ b/ta4j-examples/src/main/java/ta4jexamples/indicators/IndicatorsToChart.java
@@ -31,10 +31,10 @@
 import org.jfree.chart.JFreeChart;
 import org.jfree.chart.axis.DateAxis;
 import org.jfree.chart.plot.XYPlot;
+import org.jfree.chart.ui.ApplicationFrame;
+import org.jfree.chart.ui.UIUtils;
 import org.jfree.data.time.Day;
 import org.jfree.data.time.TimeSeriesCollection;
-import org.jfree.ui.ApplicationFrame;
-import org.jfree.ui.RefineryUtilities;
 import org.ta4j.core.Bar;
 import org.ta4j.core.BarSeries;
 import org.ta4j.core.Indicator;
@@ -58,7 +58,7 @@ public class IndicatorsToChart {
      *
      * @param barSeries the ta4j bar series
      * @param indicator the indicator
-     * @param name      the name of the chart time series
+     * @param name the name of the chart time series
      * @return the JFreeChart time series
      */
     private static org.jfree.data.time.TimeSeries buildChartBarSeries(BarSeries barSeries, Indicator<Num> indicator,
@@ -86,7 +86,7 @@ private static void displayChart(JFreeChart chart) {
         ApplicationFrame frame = new ApplicationFrame("Ta4j example - Indicators to chart");
         frame.setContentPane(panel);
         frame.pack();
-        RefineryUtilities.centerFrameOnScreen(frame);
+        UIUtils.centerFrameOnScreen(frame);
         frame.setVisible(true);
     }
 
diff --git a/ta4j-examples/src/main/java/ta4jexamples/loaders/CsvBarsLoader.java b/ta4j-examples/src/main/java/ta4jexamples/loaders/CsvBarsLoader.java
index e4e218e2..cba1853f 100644
--- a/ta4j-examples/src/main/java/ta4jexamples/loaders/CsvBarsLoader.java
+++ b/ta4j-examples/src/main/java/ta4jexamples/loaders/CsvBarsLoader.java
@@ -23,10 +23,10 @@
  */
 package ta4jexamples.loaders;
 
+import com.opencsv.CSVParserBuilder;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
-import java.nio.charset.Charset;
 import java.time.LocalDate;
 import java.time.ZoneId;
 import java.time.ZonedDateTime;
@@ -38,6 +38,9 @@
 import org.ta4j.core.BaseBarSeries;
 
 import com.opencsv.CSVReader;
+import com.opencsv.CSVReaderBuilder;
+import com.opencsv.exceptions.CsvValidationException;
+import java.nio.charset.StandardCharsets;
 
 /**
  * This class build a Ta4j bar series from a CSV file containing bars.
@@ -59,18 +62,26 @@ public static BarSeries loadCsvSeries(String filename) {
 
         BarSeries series = new BaseBarSeries("apple_bars");
 
-        try (CSVReader csvReader = new CSVReader(new InputStreamReader(stream, Charset.forName("UTF-8")), ',', '"',
-                1)) {
-            String[] line;
-            while ((line = csvReader.readNext()) != null) {
-                ZonedDateTime date = LocalDate.parse(line[0], DATE_FORMAT).atStartOfDay(ZoneId.systemDefault());
-                double open = Double.parseDouble(line[1]);
-                double high = Double.parseDouble(line[2]);
-                double low = Double.parseDouble(line[3]);
-                double close = Double.parseDouble(line[4]);
-                double volume = Double.parseDouble(line[5]);
+        try {
+            assert stream != null;
+            try (CSVReader csvReader = new CSVReaderBuilder(new InputStreamReader(stream, StandardCharsets.UTF_8))
+                    .withCSVParser(new CSVParserBuilder().withSeparator(',').build())
+                    .withSkipLines(1)
+                    .build()) {
+                String[] line;
+                while ((line = csvReader.readNext()) != null) {
+                    ZonedDateTime date = LocalDate.parse(line[0], DATE_FORMAT).atStartOfDay(ZoneId.systemDefault());
+                    double open = Double.parseDouble(line[1]);
+                    double high = Double.parseDouble(line[2]);
+                    double low = Double.parseDouble(line[3]);
+                    double close = Double.parseDouble(line[4]);
+                    double volume = Double.parseDouble(line[5]);
 
-                series.addBar(date, open, high, low, close, volume);
+                    series.addBar(date, open, high, low, close, volume);
+                }
+            } catch (CsvValidationException e) {
+                Logger.getLogger(CsvBarsLoader.class.getName())
+                        .log(Level.SEVERE, "Unable to load bars from CSV. File is not valid csv.", e);
             }
         } catch (IOException ioe) {
             Logger.getLogger(CsvBarsLoader.class.getName()).log(Level.SEVERE, "Unable to load bars from CSV", ioe);
diff --git a/ta4j-examples/src/main/java/ta4jexamples/loaders/CsvTradesLoader.java b/ta4j-examples/src/main/java/ta4jexamples/loaders/CsvTradesLoader.java
index 2553f94a..9ee649f0 100644
--- a/ta4j-examples/src/main/java/ta4jexamples/loaders/CsvTradesLoader.java
+++ b/ta4j-examples/src/main/java/ta4jexamples/loaders/CsvTradesLoader.java
@@ -23,10 +23,8 @@
  */
 package ta4jexamples.loaders;
 
-import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
-import java.nio.charset.Charset;
 import java.time.Duration;
 import java.time.Instant;
 import java.time.ZoneId;
@@ -56,22 +54,13 @@ public static BarSeries loadBitstampSeries() {
         // Reading all lines of the CSV file
         InputStream stream = CsvTradesLoader.class.getClassLoader()
                 .getResourceAsStream("bitstamp_trades_from_20131125_usd.csv");
-        CSVReader csvReader = null;
         List<String[]> lines = null;
-        try {
-            csvReader = new CSVReader(new InputStreamReader(stream, Charset.forName("UTF-8")), ',');
+        assert stream != null;
+        try (CSVReader csvReader = new com.opencsv.CSVReader(new InputStreamReader(stream))) {
             lines = csvReader.readAll();
             lines.remove(0); // Removing header line
-        } catch (IOException ioe) {
+        } catch (Exception ioe) {
             Logger.getLogger(CsvTradesLoader.class.getName()).log(Level.SEVERE, "Unable to load trades from CSV", ioe);
-        } finally {
-            if (csvReader != null) {
-                try {
-                    csvReader.close();
-                } catch (IOException ioe) {
-                    ioe.printStackTrace();
-                }
-            }
         }
 
         BarSeries series = new BaseBarSeries();
@@ -104,9 +93,9 @@ public static BarSeries loadBitstampSeries() {
      * Builds a list of populated bars from csv data.
      *
      * @param beginTime the begin time of the whole period
-     * @param endTime   the end time of the whole period
-     * @param duration  the bar duration (in seconds)
-     * @param lines     the csv data returned by CSVReader.readAll()
+     * @param endTime the end time of the whole period
+     * @param duration the bar duration (in seconds)
+     * @param lines the csv data returned by CSVReader.readAll()
      */
     @SuppressWarnings("deprecation")
     private static void buildSeries(BarSeries series, ZonedDateTime beginTime, ZonedDateTime endTime, int duration,
@@ -155,4 +144,4 @@ public static void main(String[] args) {
         System.out.println("First bar: \n" + "\tVolume: " + series.getBar(0).getVolume() + "\n" + "\tNumber of trades: "
                 + series.getBar(0).getTrades() + "\n" + "\tClose price: " + series.getBar(0).getClosePrice());
     }
-}
\ No newline at end of file
+}