字符串替换

字符串替换

public class StringReplaceEmp {//字符串替换

public static void main(String[] args) {

String str = "Hello World";

System.out.println( str.replace('H', 'W'));

System.out.println( str.replace("He", "Wa"));

System.out.println( str.replaceAll("He", "Ha"));

}

}