Use Objects.hashCode, Objects.equals, CloneUtils.clone, CloneUtils.cloneList, remove ObjectUtils

src/main/java/org/jfree/chart/ChartRenderingInfo.java

@@ -46,7 +46,6 @@
 import org.jfree.chart.entity.EntityCollection;
 import org.jfree.chart.entity.StandardEntityCollection;
 import org.jfree.chart.plot.PlotRenderingInfo;
-import org.jfree.chart.util.ObjectUtils;
 import org.jfree.chart.util.PublicCloneable;
 import org.jfree.chart.util.SerialUtils;
 
@@ -184,13 +183,13 @@ public boolean equals(Object obj) {
             return false;
         }
         ChartRenderingInfo that = (ChartRenderingInfo) obj;
-        if (!ObjectUtils.equal(this.chartArea, that.chartArea)) {
+        if (!Objects.equals(this.chartArea, that.chartArea)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.plotInfo, that.plotInfo)) {
+        if (!Objects.equals(this.plotInfo, that.plotInfo)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.entities, that.entities)) {
+        if (!Objects.equals(this.entities, that.entities)) {
             return false;
         }
         return true;

src/main/java/org/jfree/chart/JFreeChart.java

@@ -100,7 +100,6 @@
 import org.jfree.chart.ui.RectangleInsets;
 import org.jfree.chart.ui.Size2D;
 import org.jfree.chart.ui.VerticalAlignment;
-import org.jfree.chart.util.ObjectUtils;
 import org.jfree.chart.util.PaintUtils;
 import org.jfree.chart.util.SerialUtils;
 import org.jfree.data.Range;
@@ -1511,7 +1510,7 @@ public boolean equals(Object obj) {
         if (this.borderVisible != that.borderVisible) {
             return false;
         }
-        if (!ObjectUtils.equal(this.borderStroke, that.borderStroke)) {
+        if (!Objects.equals(this.borderStroke, that.borderStroke)) {
             return false;
         }
         if (!PaintUtils.equal(this.borderPaint, that.borderPaint)) {
@@ -1520,22 +1519,21 @@ public boolean equals(Object obj) {
         if (!this.padding.equals(that.padding)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.title, that.title)) {
+        if (!Objects.equals(this.title, that.title)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.subtitles, that.subtitles)) {
+        if (!Objects.equals(this.subtitles, that.subtitles)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.plot, that.plot)) {
+        if (!Objects.equals(this.plot, that.plot)) {
             return false;
         }
         if (!PaintUtils.equal(
             this.backgroundPaint, that.backgroundPaint
         )) {
             return false;
         }
-        if (!ObjectUtils.equal(this.backgroundImage,
-                that.backgroundImage)) {
+        if (!Objects.equals(this.backgroundImage, that.backgroundImage)) {
             return false;
         }
         if (this.backgroundImageAlignment != that.backgroundImageAlignment) {

src/main/java/org/jfree/chart/LegendItem.java

@@ -57,7 +57,6 @@
 import org.jfree.chart.text.AttributedStringUtils;
 import org.jfree.chart.ui.GradientPaintTransformer;
 import org.jfree.chart.ui.StandardGradientPaintTransformer;
-import org.jfree.chart.util.ObjectUtils;
 import org.jfree.chart.util.PaintUtils;
 import org.jfree.chart.util.PublicCloneable;
 import org.jfree.chart.util.SerialUtils;
@@ -1010,7 +1009,7 @@ public boolean equals(Object obj) {
                 that.attributedLabel)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.description, that.description)) {
+        if (!Objects.equals(this.description, that.description)) {
             return false;
         }
         if (this.shapeVisible != that.shapeVisible) {
@@ -1025,8 +1024,7 @@ public boolean equals(Object obj) {
         if (!PaintUtils.equal(this.fillPaint, that.fillPaint)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.fillPaintTransformer,
-                that.fillPaintTransformer)) {
+        if (!Objects.equals(this.fillPaintTransformer, that.fillPaintTransformer)) {
             return false;
         }
         if (this.shapeOutlineVisible != that.shapeOutlineVisible) {
@@ -1050,7 +1048,7 @@ public boolean equals(Object obj) {
         if (!PaintUtils.equal(this.linePaint, that.linePaint)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.labelFont, that.labelFont)) {
+        if (!Objects.equals(this.labelFont, that.labelFont)) {
             return false;
         }
         if (!PaintUtils.equal(this.labelPaint, that.labelPaint)) {

src/main/java/org/jfree/chart/LegendItemCollection.java

@@ -42,7 +42,7 @@
 import java.util.List;
 import java.util.Objects;
 
-import org.jfree.chart.util.ObjectUtils;
+import org.jfree.chart.util.CloneUtils;
 
 /**
  * A collection of legend items.
@@ -150,7 +150,7 @@ public int hashCode() {
     @Override
     public Object clone() throws CloneNotSupportedException {
         LegendItemCollection clone = (LegendItemCollection) super.clone();
-        clone.items = (List) ObjectUtils.deepClone(this.items);
+        clone.items = CloneUtils.cloneList(this.items);
         return clone;
     }
 

src/main/java/org/jfree/chart/StrokeMap.java

@@ -46,7 +46,7 @@
 import java.util.Objects;
 import java.util.Set;
 import java.util.TreeMap;
-import org.jfree.chart.util.ObjectUtils;
+
 import org.jfree.chart.util.Args;
 import org.jfree.chart.util.SerialUtils;
 
@@ -148,7 +148,7 @@ public boolean equals(Object obj) {
             K key = iterator.next();
             Stroke s1 = getStroke(key);
             Stroke s2 = that.getStroke(key);
-            if (!ObjectUtils.equal(s1, s2)) {
+            if (!Objects.equals(s1, s2)) {
                 return false;
             }
         }

src/main/java/org/jfree/chart/annotations/AbstractXYAnnotation.java

@@ -39,13 +39,13 @@
 import java.awt.Graphics2D;
 import java.awt.Shape;
 import java.awt.geom.Rectangle2D;
+import java.util.Objects;
 
 import org.jfree.chart.axis.ValueAxis;
 import org.jfree.chart.entity.EntityCollection;
 import org.jfree.chart.entity.XYAnnotationEntity;
 import org.jfree.chart.plot.PlotRenderingInfo;
 import org.jfree.chart.plot.XYPlot;
-import org.jfree.chart.util.ObjectUtils;
 
 /**
  * The interface that must be supported by annotations that are to be added to
@@ -175,10 +175,10 @@ public boolean equals(Object obj) {
             return false;
         }
         AbstractXYAnnotation that = (AbstractXYAnnotation) obj;
-        if (!ObjectUtils.equal(this.toolTipText, that.toolTipText)) {
+        if (!Objects.equals(this.toolTipText, that.toolTipText)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.url, that.url)) {
+        if (!Objects.equals(this.url, that.url)) {
             return false;
         }
         return true;

src/main/java/org/jfree/chart/annotations/CategoryLineAnnotation.java

@@ -46,6 +46,7 @@
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.Serializable;
+import java.util.Objects;
 
 import org.jfree.chart.HashUtils;
 import org.jfree.chart.axis.CategoryAnchor;
@@ -56,7 +57,6 @@
 import org.jfree.chart.plot.Plot;
 import org.jfree.chart.plot.PlotOrientation;
 import org.jfree.chart.ui.RectangleEdge;
-import org.jfree.chart.util.ObjectUtils;
 import org.jfree.chart.util.PaintUtils;
 import org.jfree.chart.util.Args;
 import org.jfree.chart.util.PublicCloneable;
@@ -350,7 +350,7 @@ public boolean equals(Object obj) {
         if (!PaintUtils.equal(this.paint, that.paint)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.stroke, that.stroke)) {
+        if (!Objects.equals(this.stroke, that.stroke)) {
             return false;
         }
         return true;

src/main/java/org/jfree/chart/annotations/CategoryPointerAnnotation.java

@@ -48,6 +48,7 @@
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.Serializable;
+import java.util.Objects;
 
 import org.jfree.chart.HashUtils;
 import org.jfree.chart.axis.CategoryAxis;
@@ -58,7 +59,6 @@
 import org.jfree.chart.plot.PlotOrientation;
 import org.jfree.chart.text.TextUtils;
 import org.jfree.chart.ui.RectangleEdge;
-import org.jfree.chart.util.ObjectUtils;
 import org.jfree.chart.util.Args;
 import org.jfree.chart.util.PublicCloneable;
 import org.jfree.chart.util.SerialUtils;
@@ -459,7 +459,7 @@ public boolean equals(Object obj) {
         if (!this.arrowPaint.equals(that.arrowPaint)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.arrowStroke, that.arrowStroke)) {
+        if (!Objects.equals(this.arrowStroke, that.arrowStroke)) {
             return false;
         }
         if (this.labelOffset != that.labelOffset) {

src/main/java/org/jfree/chart/annotations/TextAnnotation.java

@@ -44,11 +44,11 @@
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.Serializable;
+import java.util.Objects;
 
 import org.jfree.chart.HashUtils;
 import org.jfree.chart.event.AnnotationChangeEvent;
 import org.jfree.chart.ui.TextAnchor;
-import org.jfree.chart.util.ObjectUtils;
 import org.jfree.chart.util.PaintUtils;
 import org.jfree.chart.util.Args;
 import org.jfree.chart.util.SerialUtils;
@@ -279,20 +279,19 @@ public boolean equals(Object obj) {
             return false;
         }
         TextAnnotation that = (TextAnnotation) obj;
-        if (!ObjectUtils.equal(this.text, that.getText())) {
+        if (!Objects.equals(this.text, that.getText())) {
             return false;
         }
-        if (!ObjectUtils.equal(this.font, that.getFont())) {
+        if (!Objects.equals(this.font, that.getFont())) {
             return false;
         }
         if (!PaintUtils.equal(this.paint, that.getPaint())) {
             return false;
         }
-        if (!ObjectUtils.equal(this.textAnchor, that.getTextAnchor())) {
+        if (!Objects.equals(this.textAnchor, that.getTextAnchor())) {
             return false;
         }
-        if (!ObjectUtils.equal(this.rotationAnchor,
-                that.getRotationAnchor())) {
+        if (!Objects.equals(this.rotationAnchor, that.getRotationAnchor())) {
             return false;
         }
         if (this.rotationAngle != that.getRotationAngle()) {

src/main/java/org/jfree/chart/annotations/XYBoxAnnotation.java

@@ -46,14 +46,14 @@
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.Serializable;
+import java.util.Objects;
 
 import org.jfree.chart.axis.ValueAxis;
 import org.jfree.chart.plot.Plot;
 import org.jfree.chart.plot.PlotOrientation;
 import org.jfree.chart.plot.PlotRenderingInfo;
 import org.jfree.chart.plot.XYPlot;
 import org.jfree.chart.ui.RectangleEdge;
-import org.jfree.chart.util.ObjectUtils;
 import org.jfree.chart.util.PaintUtils;
 import org.jfree.chart.util.PublicCloneable;
 import org.jfree.chart.util.SerialUtils;
@@ -228,7 +228,7 @@ public boolean equals(Object obj) {
         if (!(this.y1 == that.y1)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.stroke, that.stroke)) {
+        if (!Objects.equals(this.stroke, that.stroke)) {
             return false;
         }
         if (!PaintUtils.equal(this.outlinePaint, that.outlinePaint)) {

src/main/java/org/jfree/chart/annotations/XYDataImageAnnotation.java

@@ -42,6 +42,7 @@
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
+import java.util.Objects;
 
 import org.jfree.chart.axis.AxisLocation;
 import org.jfree.chart.axis.ValueAxis;
@@ -50,7 +51,6 @@
 import org.jfree.chart.plot.PlotRenderingInfo;
 import org.jfree.chart.plot.XYPlot;
 import org.jfree.chart.ui.RectangleEdge;
-import org.jfree.chart.util.ObjectUtils;
 import org.jfree.chart.util.Args;
 import org.jfree.chart.util.PublicCloneable;
 import org.jfree.data.Range;
@@ -316,7 +316,7 @@ public boolean equals(Object obj) {
         if (this.includeInDataBounds != that.includeInDataBounds) {
             return false;
         }
-        if (!ObjectUtils.equal(this.image, that.image)) {
+        if (!Objects.equals(this.image, that.image)) {
             return false;
         }
         // seems to be the same...

src/main/java/org/jfree/chart/annotations/XYDrawableAnnotation.java

@@ -40,6 +40,7 @@
 import java.awt.geom.AffineTransform;
 import java.awt.geom.Rectangle2D;
 import java.io.Serializable;
+import java.util.Objects;
 
 import org.jfree.chart.axis.ValueAxis;
 import org.jfree.chart.plot.Plot;
@@ -48,7 +49,6 @@
 import org.jfree.chart.plot.XYPlot;
 import org.jfree.chart.ui.Drawable;
 import org.jfree.chart.ui.RectangleEdge;
-import org.jfree.chart.util.ObjectUtils;
 import org.jfree.chart.util.Args;
 import org.jfree.chart.util.PublicCloneable;
 
@@ -211,7 +211,7 @@ public boolean equals(Object obj) {
         if (this.drawScaleFactor != that.drawScaleFactor) {
             return false;
         }
-        if (!ObjectUtils.equal(this.drawable, that.drawable)) {
+        if (!Objects.equals(this.drawable, that.drawable)) {
             return false;
         }
         // seem to be the same...

src/main/java/org/jfree/chart/annotations/XYImageAnnotation.java

@@ -45,6 +45,7 @@
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.Serializable;
+import java.util.Objects;
 
 import org.jfree.chart.axis.AxisLocation;
 import org.jfree.chart.axis.ValueAxis;
@@ -54,7 +55,6 @@
 import org.jfree.chart.plot.XYPlot;
 import org.jfree.chart.ui.RectangleAnchor;
 import org.jfree.chart.ui.RectangleEdge;
-import org.jfree.chart.util.ObjectUtils;
 import org.jfree.chart.util.Args;
 import org.jfree.chart.util.PublicCloneable;
 
@@ -248,7 +248,7 @@ public boolean equals(Object obj) {
         if (this.y != that.y) {
             return false;
         }
-        if (!ObjectUtils.equal(this.image, that.image)) {
+        if (!Objects.equals(this.image, that.image)) {
             return false;
         }
         if (!this.anchor.equals(that.anchor)) {

src/main/java/org/jfree/chart/annotations/XYLineAnnotation.java

@@ -47,6 +47,7 @@
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.Serializable;
+import java.util.Objects;
 
 import org.jfree.chart.axis.ValueAxis;
 import org.jfree.chart.plot.Plot;
@@ -55,7 +56,6 @@
 import org.jfree.chart.plot.XYPlot;
 import org.jfree.chart.ui.RectangleEdge;
 import org.jfree.chart.util.LineUtils;
-import org.jfree.chart.util.ObjectUtils;
 import org.jfree.chart.util.PaintUtils;
 import org.jfree.chart.util.Args;
 import org.jfree.chart.util.PublicCloneable;
@@ -230,7 +230,7 @@ public boolean equals(Object obj) {
         if (!PaintUtils.equal(this.paint, that.paint)) {
             return false;
         }
-        if (!ObjectUtils.equal(this.stroke, that.stroke)) {
+        if (!Objects.equals(this.stroke, that.stroke)) {
             return false;
         }
         // seems to be the same...