代码初步验证集合中的Vector的多线程安全性

package com.interview.threads.teststructor;

import java.util.Vector;

/**
 * @author helloLi
 * @version 1.0
 * @date 2021/3/1 23:17
 * 一个存一个取也是一种线程是否安全的测试方法
 */
public class VectorSynTest {
    
    
    private static Vector<Integer> vector = new Vector<>();
    private static int gf = 0;
    private static int mk = 0;
    public static void main(String[] args) throws InterruptedException {
    
    

        for(int j = 0; j < 50000; j++) {
    
    
            Thread removedThread = new Thread(new Runnable() {
    
    
                @Override
                public void run() {
    
    
                    for(int l = 0; l < 2 ; l++){
    
    
                        vector.add(1);
                        mk++;
                        try {
    
    
                            int increase = increase();
                        } catch (InterruptedException e) {
    
    
                            e.printStackTrace();
                        }

                    }
                    System.out.println("--------------------------------------------");
                    System.out.println("vector加20000次:"+vector.size());
                    System.out.println("普通变量加20000次+------:"+mk);
                    System.out.println("加锁i++加20000次" + gf);
                    System.out.println("---------------------------------------------");
                }

            });
            removedThread.start();
        }
        for(int j = 0; j < 50000; j++) {
    
    

            Thread printThread = new Thread(new Runnable() {
    
    
                @Override
                public void run() {
    
    
                    for(int l = 0; l< 2 ; l++){
    
    
                        vector.add(1);
                        mk++;
                        try {
    
    
                            int increase2 = increase();
                        } catch (InterruptedException e) {
    
    
                            e.printStackTrace();
                        }
                    }
                    System.out.println("--------------------------------------------");
                    System.out.println("vector加20000次:"+vector.size());
                    System.out.println("普通变量加20000次+------:"+mk);
                    System.out.println("加锁i++加20000次" + gf);
                    System.out.println("---------------------------------------------");
                }

            });
            printThread.start();
        }
        }



    public static synchronized int increase() throws InterruptedException {
    
    
        System.out.println("我是加锁的累加方法，我叫"+Thread.currentThread().getName());
        gf++;
        System.out.println(Thread.currentThread().getName()+"线程运行结束！");
        return gf;
    }

    public static synchronized int decrease() throws InterruptedException {
    
    
        System.out.println("我是加锁的递减方法，我叫"+Thread.currentThread().getName());
        gf--;
        System.out.println(Thread.currentThread().getName()+"线程运行结束！");
        return gf;
    }


}