摘要： 1 package com.zl.jvm; 2 3 import java.util.ArrayList; 4 5 public class TestSet { 6 7 8 public static void main(String[] args) { 9 10 //ArrayList s2 = new ArrayList();11 12 char[] a = { '0', '1', '2', '3', '4','5','6','7','8', 阅读全文