谁能告诉我这个程序的功能是什么

来源：百度知道 编辑：UC知道 时间：2024/05/25 03:57:37
package com.lzy.interviewing;

public class ThreadTest1 {

private int j ;

public synchronized void inc() {
j++;
System.out.println(Thread.currentThread().getName() + "This +j is :"
+ j);
}

public synchronized void dec() {
j--;
System.out.println(Thread.currentThread().getName() + "This -j is :"
+ j);
}

class Inc implements Runnable {
public void run() {
for (int i = 0; i < 10; i++) {
inc();
}
}
}

class Dec implements Runnable {
public void run() {
for (int i = 0; i < 10; i++) {
dec();
}
}
}

public static void main(String[] args) {
// TODO Auto-generated method stub
ThreadTest1 tTest = new ThreadTest1();
Inc inc = tTest.new Inc();
Dec dec = tTest.new Dec();
for (int i = 0; i < 2; i++) {
Thread t = new Thread(inc);
t.s

package com.lzy.interviewing; //导入包

public class ThreadTest1 {

private int j ;

public synchronized void inc() { //synchronized 线程互斥 同一时间内只能执行这个类//中的一个方法

j++;
System.out.println(Thread.currentThread().currentThread() + "This +j is :"
+ j); // currentThread() 返回对当前正在执行的线程对象的引用。currentThread()返回该//线程的名称。
}

public synchronized void dec() {
j--;
System.out.println(Thread.currentThread().getName() + "This -j is :"
+ j);
}

class Inc implements Runnable { //实现Runnable接口 java中有2中方法实现线程 1、扩展java.lang.Thread类 2、通过java.lang.Runnable接口
public void run() {
for (int i = 0; i < 10; i++) {
inc();
}
}
}

class Dec implements Runnable {
public void run() {
for (int i = 0; i < 10; i++) {
dec();
}
}
}

public static void main(String[] args) {
// TODO Auto-generated metho