case sensitive and insensitive condition in String replace function

case sensitive and insensitive condition in String replace function

            String target = "FooBar";

   target = target.replaceAll("foo", "");

   System.out.println(target); 

In java the above statements output is 'FooBar'

we need to replace the 'foo' string case insensitively we need to write like following.

             target = "FooBar";

   target = target.replaceAll("(?i)foo", "");

   System.out.println(target);

The output of above code is 'Bar'

Sample code:

package com.javanotes2all.java.string;

public class CaseInsesitiveReplace 
{
 public static void main(String[] args) 
 {
  //case sensitive replace
  String target = "FooBar";
     target = target.replaceAll("foo", "");
     System.out.println(target); 
     
     //case insensitive replace
  target = "FooBar";
     target = target.replaceAll("(?i)foo", "");
     System.out.println(target);
 }

}

output: FooBar Bar