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Java Tutorial : Java String (replace(char oldChar, char newChar) method)

ReplaceDemo.java

/*
 * public String replace(char oldChar, char newChar)
 * 
 * Parameters: 
 * ---------- 
 * oldChar - the old character. 
 * newChar - the new character.
 * 
 * Returns: 
 * ------- 
 * Returns a string resulting from replacing all
 * occurrences of oldChar in this string with
 * newChar.
 */

public class ReplaceDemo
{

    public static void main(String[] args)
    {
        String str = "aaabbb";
        System.out.println("str         =  " + str);
        String replacedStr = str.replace('a', 'z');
        System.out.println("replacedStr =  " + replacedStr);
    }
}