多线程打印

Posted 2022-12-11 Panda_Java

两个线程交替打印1到100

• 1 两个线程交替打印1到100
• 2 三个线程交替打印a、b、c

1 两个线程交替打印1到100

static volatile int falg = 0;
    @Test
    public void test001()

        Thread threadA = new Thread(new Runnable() 
            @Override
            public void run() 
                int i = -1;
                while(i < 100) 
                    if(KinglexCompanyExecutorApplicationTests.falg == 0)
                        i = i + 2;
                        System.out.println(i);
                        KinglexCompanyExecutorApplicationTests.falg = 1;
                    
                
            
        );
        threadA.start();
        Thread threadB = new Thread(new Runnable() 
            @Override
            public void run() 
                int i = 0;
                while(i < 100)
                    if(KinglexCompanyExecutorApplicationTests.falg == 1)
                        i = i + 2;
                        System.out.println(i);
                        KinglexCompanyExecutorApplicationTests.falg = 0;
                    
                
            
        );
        threadB.start();
    

2 三个线程交替打印a、b、c

  static volatile int falg = 0;
    @Test
    public void test001()

        Thread threadA = new Thread(new Runnable() 
            @Override
            public void run() 
                int i = 0;
                while(i < 100) 
                    if(KinglexCompanyExecutorApplicationTests.falg == 0)
                        i = i + 1;
                        System.out.println('a');
                        KinglexCompanyExecutorApplicationTests.falg = 1;
                    
                
            
        );
        threadA.start();
        Thread threadB = new Thread(new Runnable() 
            @Override
            public void run() 
                int i = 0;
                while(i < 100)
                    if(KinglexCompanyExecutorApplicationTests.falg == 1)
                        i = i + 1;
                        System.out.println('b');
                        KinglexCompanyExecutorApplicationTests.falg = 2;
                    
                
            
        );
        threadB.start();
        Thread threadC = new Thread(new Runnable() 
            @Override
            public void run() 
                int i = 0;
                while(i < 100)
                    if(KinglexCompanyExecutorApplicationTests.falg == 2)
                        i = i + 1;
                        System.out.println('c');
                        KinglexCompanyExecutorApplicationTests.falg = 0;
                    
                
            
        );
        threadC.start();