Java String

package com.ssm.cts.test;

import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import java.util.Stack;
import java.util.Vector;

public class ClassTest {
    // 测试
  public static void main(String[] args) {
    
    String home = "chanpinxue.cn";
        int len = home.length();
        System.out.println("网址长度 : " + len);
        // 连接字符串
        System.out.println("idodo".concat(".xin"));
        System.out.println("idodo" + ".xin");
        System.out.println(String.format("%s%s", "idodo", ".xin"));
        // 替换
        System.out.println("jiangzhihao".replace("hao", "9001"));
  }
}