remove from string java code example

Example 1: how to remove all special characters from a string in java

String str= "This#string%contains^special*characters&.";   
str = str.replaceAll("[^a-zA-Z0-9]", " ");  
System.out.println(str);

Example 2: Java remove character from string

// remove last character from string in java
public class SubstringDemo
{
   public static void main(String[] args)
   {
      String strInput = "Flower Brackets!";
      String strOutput = strInput.substring(0, strInput.length() - 1);
      System.out.println(strOutput);
   }
}

Example 3: Java remove character from string

// how to remove particular character from string
public class RemoveParticularCharacter
{
   public static void main(String[] args)
   {
      String strInput = "Hello world java";
      System.out.println(removeCharacter(strInput, 6));
   }
   public static String removeCharacter(String strRemove, int r)
   {
      return strRemove.substring(0, r) + strRemove.substring(r + 1);
   }
}

Example 4: how to delete character in string java

# subString(int start, int end);

String a = "Hello!";
b = a.subString(0,a.length()-1) #Remove the last String
# b should be "Hello" then

Example 5: how to remove letters from string java

public extractLetters(String str){
	String result="";
	for(int i= 0; i< str.length; i++){
	    if(Character.isLetter(str.charAt(i))){
	    result+=str.charAt(i);
	  	}
	}