Java字符串替换方法

import java.io.*;

public class Test {

   public static void main(String args[]) {

      String Str = new String("Welcome to codingdict.com");

      System.out.print("Return Value :" );

      System.out.println(Str.replace('o', 'T'));

      System.out.print("Return Value :" );

      System.out.println(Str.replace('l', 'D'));

   }

}