IllegalArgumentException:非法参数异常

IllegalArgumentException:非法参数异常

抛出的异常表明向方法传递了一个不合法或不正确的参数。

代码演示

public class ThreadPriorityDemo {
    public static void main(String[] args) {

        ThreadPriority tp1 = new ThreadPriority();
        ThreadPriority tp2 = new ThreadPriority();
        ThreadPriority tp3 = new ThreadPriority();

        tp1.setName("奥拉夫");
        tp2.setName("挖掘机");
        tp3.setName("德邦总管");

        //获取默认优先级
        //System.out.println(tp1.getPriority());//5
        //System.out.println(tp2.getPriority());//5
        //System.out.println(tp3.getPriority());//5

        //设置优先值
        //IllegalArgumentException:非法参数异常
        tp1.setPriority(1000);

        //通过查看API设置正确的优先级
        // tp1.setPriority(1);
        // tp3.setPriority(10);

        //启动线程
        //  tp1.start();
        //  tp2.start();
        //  tp3.start();
    }
}
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结果:

Exception in thread "main" java.lang.IllegalArgumentException
	at java.base/java.lang.Thread.setPriority(Thread.java:1188)
	at com.ginger.demo03.ThreadPriorityDemo.main(ThreadPriorityDemo.java:21)
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