How to replace a character in a String with another character

There is a replace method provided by the String class that can be used to replace a character in a String with another character. The following code snippet demonstrates this:

package demo;

public class StringDemo {

public static void main(String[] args) {
String str = "Hello World";
String modifiedStr = str.replace('o', 'i');
System.out.println("Modified String is "+modifiedStr);

}
}

So the above code will replace all occurrences of the letter ‘o’ in the String “Hello World”  an ‘i’ and will print the following:

Helli Wirld