要求：子執行緒執行執行10次後，主線程再執行5次，這樣交替執行三遍
package multithread;
public class multithread
}}).start();
//主線程
for(int i=0;i<3;i++)
}//標識子程序是否可以執行
private static volatile boolean flag = true;
public synchronized void subthread()catch (interruptedexception e)
}//flag==true,子程序執行10次
for(int i=0;i<10;i++)
//喚醒主程序
flag=false;
notify();
}public synchronized void mainthread()catch (interruptedexception e)
}//flag==false時，主程序可以執行五次
for(int i=0;i<5;i++)
//喚醒子程序
flag=true;
notify();
}}
thread-0:sub method running 0
thread-0:sub method running 1
thread-0:sub method running 2
thread-0:sub method running 3
thread-0:sub method running 4
thread-0:sub method running 5
thread-0:sub method running 6
thread-0:sub method running 7
thread-0:sub method running 8
thread-0:sub method running 9
main:main method running 0
main:main method running 1
main:main method running 2
main:main method running 3
main:main method running 4
thread-0:sub method running 0
thread-0:sub method running 1
thread-0:sub method running 2
thread-0:sub method running 3
thread-0:sub method running 4
thread-0:sub method running 5
thread-0:sub method running 6
thread-0:sub method running 7
thread-0:sub method running 8
thread-0:sub method running 9
main:main method running 0
main:main method running 1
main:main method running 2
main:main method running 3
main:main method running 4
thread-0:sub method running 0
thread-0:sub method running 1
thread-0:sub method running 2
thread-0:sub method running 3
thread-0:sub method running 4
thread-0:sub method running 5
thread-0:sub method running 6
thread-0:sub method running 7
thread-0:sub method running 8
thread-0:sub method running 9
main:main method running 0
main:main method running 1
main:main method running 2
main:main method running 3
main:main method running 4
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