Claim:
By means of the synchronization mechanism, SLEEP () method, the Join () method to realize animation display;
A thread: 1,3,5,7,9
B Thread: 2,4,6,8,10
Propan thread: a, b, c, d, e
main () thread Output: thread starts, the thread end
Output: the thread starting, 1-a-2 ## 3-b-4 ## 5-c-6 ## ...
Thinking:
Determining a plurality of markers, Analog (consumer - producer) outputs each thread after a wait, and then change their marks
Critical resource - a plurality == putX () == method determines own marker (== isEmptyX ==) then output
Enabling multiple threads execute orderly alternately
Code:
class Resource{
private boolean isEmpty01 = true;
private boolean isEmpty02 = false;
private boolean isEmpty03 = false;
// put each method corresponds to one output, each output on a waiting, waiting awaken others
public void put1(){
while(!isEmpty01){
try{
wait();
}catch(InterruptedException e){
e.printStackTrace ();
}
}
After // output
isEmpty01 = false;
isEmpty02 = true;
notifyAll();
}
public void put2(){
while(!isEmpty02){
try{
wait();
}catch(InterruptedException e){
e.printStackTrace ();
}
}
isEmpty02 = false;
isEmpty03 = true;
notifyAll();
}
public void put3(){
while(!isEmpty03){
try{
wait();
}catch(InterruptedException e){
e.printStackTrace ();
}
}
isEmpty03 = false;
isEmpty01 = true;
notifyAll();
}
}
class Player01 implements Runnable{
private Resource res;
private String[] arr;
Player01(){}
Player01(String[] arr,Resource res){
this.arr = arr;
this.res = res;
}
public void run(){
synchronized(res){
for(int i=0;i
// wrong point
// 61 and 62, these two can not be swapped
res.put1();
System.out.print(arr[i]+"-");
try{
Thread.sleep(1000);
}catch(InterruptedException e){
e.printStackTrace ();
}
}
}
}
}
class Player02 implements Runnable{
private Resource res;
private String[] arr;
Player02(){}
Player02(String[] arr,Resource res){
this.arr = arr;
this.res = res;
}
public void run(){
synchronized(res){
for(int i=0;i
res.put2 ();
System.out.print(arr[i]+"-");
try{
Thread.sleep(1000);
}catch(InterruptedException e){
e.printStackTrace ();
}
}
}
}
}
class Player03 implements Runnable{
private Resource res;
private String[] arr;
Player03(){}
Player03(String[] arr,Resource res){
this.arr = arr;
this.res = res;
} Wuxi well-known and Women's Hospital http://www.wxbhnkyy39.com/
public void run(){
synchronized(res){
for(int i=0;i
res.put3 ();
System.out.print(arr[i]+"## ");
try{
Thread.sleep(1000);
}catch(InterruptedException e){
e.printStackTrace ();
}
}
}
}
}
class Test08{
public static void main(String[] args){
String[] arr1 = {"1","3","5","7","9"};
String[] arr2 = {"a","b","c","d","e"};
String[] arr3 = {"2","4","6","8","0"};
Resource res = new Resource();
Player01 p1 = new Player01(arr1,res);
Player02 p2 = new Player02(arr2,res);
Player03 p3 = new Player03(arr3,res);
Thread t1 = new Thread(p1);
Thread t2 = new Thread(p2);
Thread t3 = new Thread(p3);
t1.start();
t2.start();
t3.start();
}
}
Produce the results.
It is important:
Such markers may be implemented using more than two threads of execution ordered alternately