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package cn.itcast.heima2;/**
* java 线程同步锁处理
* 利用类的字节码文件对象唯一
*
* @author Administrator
*
*/
public class TraditionalThreadSynchronized {
/**
* @param args
*/
public static void main(String[] args) {
new TraditionalThreadSynchronized().init();
}
private void init(){
final Outputer outputer = new Outputer();
new Thread(new Runnable(){
@Override
public void run() {
while(true){
try {
Thread.sleep(10);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
outputer.output("zhangxiaoxiang");
}
}
}).start();
new Thread(new Runnable(){
@Override
public void run() {
while(true){
try {
Thread.sleep(10);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
outputer.output3("lihuoming");
}
}
}).start();
}
static class Outputer{
public void output(String name){
int len = name.length();
synchronized (Outputer.class)
{
for(int i=0;i<len;i++){
System.out.print(name.charAt(i));
}
System.out.println();
}
}
public synchronized void output2(String name){
int len = name.length();
for(int i=0;i<len;i++){
System.out.print(name.charAt(i));
}
System.out.println();
}
public static synchronized void output3(String name){
int len = name.length();
for(int i=0;i<len;i++){
System.out.print(name.charAt(i));
}
System.out.println();
}
}
}
package cn.itcast.heima2;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
/**
* 多账户操作余额的增加与减少
* 每个线程共享数据，互相不影响对方操作，事物提交。
* 通过线程对应得名称为key保存对应操作线程对应得值。
* @author Administrator
*
*/
public class ThreadScopeShareData {
private static int data = 0;
private static Map<Thread, Integer> threadData = new HashMap<Thread, Integer>();
public static void main(String[] args) {
for(int i=0;i<2;i++){
new Thread(new Runnable(){
@Override
public void run() {
int data = new Random().nextInt();
System.out.println(Thread.currentThread().getName()
+ " has put data :" + data);
threadData.put(Thread.currentThread(), data);
new A().get();
new B().get();
}
}).start();
}
}
static class A{
public void get(){
int data = threadData.get(Thread.currentThread());
System.out.println("A from " + Thread.currentThread().getName()
+ " get data :" + data);
}
}
static class B{
public void get(){
int data = threadData.get(Thread.currentThread());
System.out.println("B from " + Thread.currentThread().getName()
+ " get data :" + data);
}
}
}
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