//线程同步
publicstaticvoidmain(String[] args) {
newSync().show();
}
publicvoidshow(){
final Infoinfo=new Info();
//创建一个线程
newThread(new Runnable(){
publicvoidrun() {
while(true){
try {
Thread.sleep(10);
} catch(InterruptedException e) {
e.printStackTrace();
}
info.outname1("wangyong");
}
}
}).start();
//在创建一个线程
newThread(new Runnable(){
publicvoidrun() {
while(true){
try {
Thread.sleep(10);
} catch(InterruptedException e) {
e.printStackTrace();
}
info.outname1("zhangsan");
}
}
}).start();
}
classInfo{
publicvoidoutname1(String name){
intlen=name.length();
for(inti=0;i<len;i++){
System.out.print(name.charAt(i));
}
System.out.println();
}
}
}
以上的实例可以看出，线程不同步。
该如何修改呢？
packagedemo;
publicclass Sync{
/**
*@paramargs
*/
//线程同步
publicstaticvoidmain(String[] args) {
newSync().show();
}
publicvoidshow(){
final Infoinfo=new Info();
//创建一个线程
newThread(new Runnable(){
publicvoidrun() {
while(true){
try {
Thread.sleep(10);
} catch(InterruptedException e) {
e.printStackTrace();
}
info.outname1("wangyong");
}
}
}).start();
//在创建一个线程
newThread(new Runnable(){
publicvoidrun() {
while(true){
try {
Thread.sleep(100);
} catch(InterruptedException e) {
e.printStackTrace();
}
info.outname3("zhangsan");
}
}
}).start();
}
staticclassInfo{
//方法一
publicvoidoutname1(String name){
intlen=name.length();
synchronized(Info.class){
for(inti=0;i<len;i++){
System.out.print(name.charAt(i));
}
System.out.println();
}
}
//方法二
publicsynchronizedvoidoutname2(String name){
intlen=name.length();
for(inti=0;i<len;i++){
System.out.print(name.charAt(i));
}
System.out.println();
}
//方法二
publicstaticsynchronizedvoidoutname3(String
name){
intlen=name.length();
for(inti=0;i<len;i++){
System.out.print(name.charAt(i));
}
System.out.println();
}
}
}