java中线程的优先级

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package thread;public class 线程优先级 {public static void main(String[] args) {// TODO Auto-generated method stub//给线程命名Tang tang = new Tang();Thread tangTh = new Thread(tang);tangTh.setName("煮汤线程");//给线程命名System.out.println(tangTh.getName()+"的优先级是："+tangTh.getPriority());Cooking cooking = new Cooking();Thread cookingTh = new Thread(cooking);cookingTh.setName("炒菜线程");System.out.println(cookingTh.getName()+"的优先级是："+cookingTh.getPriority());tangTh.setPriority(10);cookingTh.setPriority(1);tangTh.start();cookingTh.start();}}class Tang implements Runnable{public void bao(){for (int i = 1; i <= 4; i++) {try {Thread.sleep(1000);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}System.out.println("枸杞老鸭汤，煲了"+i+"个小时了");}System.out.println("汤好了");}@Overridepublic void run() {// TODO Auto-generated method stubbao();}}class Cooking implements Runnable{public void cook(){for (int i = 1; i <= 4; i++) {try {Thread.sleep(600);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}System.out.println("正在炒个"+i+"菜");}System.out.println("菜好了");}@Overridepublic void run() {// TODO Auto-generated method stubcook();}}

例子二

package thread;

public class 优先级使用2 {

public static void main(String[] args) {
// TODO Auto-generated method stub
Thread th1 = new Thread(new Print1());
Thread th2 = new Thread(new Print1());
Thread th3 = new Thread(new Print1());
th1.setPriority(10);
th2.setPriority(1);
th1.start();
th2.start();
th3.start();
}

}

//打印1-1000
class Print1 implements Runnable{

@Override
public void run() {
// TODO Auto-generated method stub
for (int i = 1; i < 1000; i++) {
System.out.print(i+"\t");
if(i%20 == 0)
System.out.println();
}
}

}

//打印1001-2000
class Print2 implements Runnable{

@Override
public void run() {
// TODO Auto-generated method stub
for (int i = 1001; i < 2000; i++) {
System.out.print(i+"\t");
if(i%20 == 0)
System.out.println();
}
}

}

//打印2001-3000
class Print3 implements Runnable{

@Override
public void run() {
// TODO Auto-generated method stub
for (int i = 2001; i < 3000; i++) {
System.out.print(i+"\t");
if(i%20 == 0)
System.out.println();
}
}

}

package thread;public class 优先级使用2 {public static void main(String[] args) {// TODO Auto-generated method stubThread th1 = new Thread(new Print1());Thread th2 = new Thread(new Print1());Thread th3 = new Thread(new Print1());th1.setPriority(10);th2.setPriority(1);th1.start();th2.start();th3.start();}}//打印1-1000class Print1 implements Runnable{@Overridepublic void run() {// TODO Auto-generated method stubfor (int i = 1; i < 1000; i++) {System.out.print(i+"\t");if(i%20 == 0)System.out.println();}}}//打印1001-2000class Print2 implements Runnable{@Overridepublic void run() {// TODO Auto-generated method stubfor (int i = 1001; i < 2000; i++) {System.out.print(i+"\t");if(i%20 == 0)System.out.println();}}}//打印2001-3000class Print3 implements Runnable{@Overridepublic void run() {// TODO Auto-generated method stubfor (int i = 2001; i < 3000; i++) {System.out.print(i+"\t");if(i%20 == 0)System.out.println();}}}

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