upper_character

// Java program to remove uppercase, lowercase 
// special, numeric, and non-numeric characters 
import java.util.regex.Matcher; 
import java.util.regex.Pattern; 

public class GFG { 

	// Function to remove uppercase characters 
	public static String 
	removingUpperCaseCharacters(String str) 
	{ 

		// Create a regular expression 
		String regex = "[A-Z]"; 

		// Compile the regex to create pattern 
		// using compile() method 
		Pattern pattern = Pattern.compile(regex); 

		// Get a matcher object from pattern 
		Matcher matcher = pattern.matcher(str); 

		// Replace every matched pattern with the 
		// target string using replaceAll() method 
		return matcher.replaceAll(""); 
	} 

	// Function to remove lowercase characters 
	public static String 
	removingLowerCaseCharacters(String str) 
	{ 

		// Create a regular expression 
		String regex = "[a-z]"; 

		// Compile the regex to create pattern 
		// using compile() method 
		Pattern pattern = Pattern.compile(regex); 

		// Get a matcher object from pattern 
		Matcher matcher = pattern.matcher(str); 

		// Replace every matched pattern with the 
		// target string using replaceAll() method 
		return matcher.replaceAll(""); 
	} 

	// Function to remove special characters 
	public static String 
	removingSpecialCharacters(String str) 
	{ 

		// Create a regular expression 
		String regex = "[^A-Za-z0-9]"; 

		// Compile the regex to create pattern 
		// using compile() method 
		Pattern pattern = Pattern.compile(regex); 

		// Get a matcher object from pattern 
		Matcher matcher = pattern.matcher(str); 

		// Replace every matched pattern with the 
		// target string using replaceAll() method 
		return matcher.replaceAll(""); 
	} 

	// Function to remove numeric characters 
	public static String 
	removingNumericCharacters(String str) 
	{ 

		// Create a regular expression 
		String regex = "[0-9]"; 

		// Compile the regex to create pattern 
		// using compile() method 
		Pattern pattern = Pattern.compile(regex); 

		// Get a matcher object from pattern 
		Matcher matcher = pattern.matcher(str); 

		// Replace every matched pattern with the 
		// target string using replaceAll() method 
		return matcher.replaceAll(""); 
	} 

	// Function to remove non-numeric characters 
	public static String 
	removingNonNumericCharacters(String str) 
	{ 

		// Create a regular expression 
		String regex = "[^0-9]"; 

		// Compile the regex to create pattern 
		// using compile() method 
		Pattern pattern = Pattern.compile(regex); 

		// Get a matcher object from pattern 
		Matcher matcher = pattern.matcher(str); 

		// Replace every matched pattern with the 
		// target string using replaceAll() method 
		return matcher.replaceAll(""); 
	} 

	// Driver Code 
	public static void main(String[] args) 
	{ 
		// Given String str 
		String str = "GFGgfg123$%"; 

		// Print the strings after the simultaneous 
		// modifications 
		System.out.println( 
			"After removing uppercase characters: "
			+ removingUpperCaseCharacters(str)); 
		System.out.println( 
			"After removing lowercase characters: "
			+ removingLowerCaseCharacters(str)); 
		System.out.println( 
			"After removing special characters: "
			+ removingSpecialCharacters(str)); 
		System.out.println( 
			"After removing numeric characters: "
			+ removingNumericCharacters(str)); 
		System.out.println( 
			"After removing non-numeric characters: "
			+ removingNonNumericCharacters(str)); 
	} 
}