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);
 
    }
 
}