java remove character from string

1// how to remove particular character from string
2public class RemoveParticularCharacter
3{
4   public static void main(String[] args)
5   {
6      String strInput = "Hello world java";
7      System.out.println(removeCharacter(strInput, 6));
8   }
9   public static String removeCharacter(String strRemove, int r)
10   {
11      return strRemove.substring(0, r) + strRemove.substring(r + 1);
12   }
13}

1// remove last character from string in java
2public class SubstringDemo
3{
4   public static void main(String[] args)
5   {
6      String strInput = "Flower Brackets!";
7      String strOutput = strInput.substring(0, strInput.length() - 1);
8      System.out.println(strOutput);
9   }
10}

1String str = "abcdDCBA123";
2String strNew = str.replace("a", ""); // strNew is 'bcdDCBA123'

1# subString(int start, int end);
2
3String a = "Hello!";
4b = a.subString(0,a.length()-1) #Remove the last String
5# b should be "Hello" then

1
2String str = "abcdDCBA123";
3String strNew = str.replace("a", ""); // strNew is 'bcdDCBA123'
4

1// Java remove character from string
2public class RemoveOnlyLetters
3{
4   public static void main(String[] args)
5   {
6      String strExample = "jd15352kLJJD55185716kdkLJJJ";
7      System.out.println("Before: " + strExample);
8      strExample = strExample.replaceAll("[a-zA-Z]", "");
9      System.out.println("After: " + strExample);
10   }
11}