JavaAPI---replace

package daysreplace;

public class ReplaceTest {

    public static void main(String[] args) {
        String str = "wwxhhhhhhhhhhh333";

        System.out.println("替换前的字符串" + str);

        String newstr = str.replace("333", "111");

        System.out.println("替换后的字符串" + newstr);

    }

}