スレッドは交互に実行され、1つの書き込み、1つの読み取りが行われます.
3679 ワード
import java.util.Stack;
public class SynchronizedTest {
public static void main(String[] args) {
Stack<String> s = new Stack<String>();
Thread t1 = new Producer(s);
t1.start();
Thread t2 = new Consumer(s);
t2.start();
}
}
class Consumer extends Thread {
Stack<String> s;
public Consumer(Stack<String> s) {
this.s = s;
}
@Override
public void run() {
while (true) {
synchronized (s) {
while (s.empty()) {
try {
s.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("pop:" + s.pop());
s.notify();
}
}
}
}
class Producer extends Thread {
Stack<String> s;
public Producer(Stack<String> s) {
this.s = s;
}
@Override
public void run() {
while (true) {
synchronized (s) {
while (!s.empty()) {
try {
s.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("push:" + s.push("a"));
s.notify();
}
}
}
}
出力:
push:a pop:a push:a pop:a
......
または、
import java.util.Stack;
public class SynchronizedTest {
public static void main(String[] args) {
Data data = new Data();
Thread t1 = new Producer(data);
t1.start();
Thread t2 = new Consumer(data);
t2.start();
}
}
class Data {
Stack<String> s = new Stack<String>();
public synchronized void read() {
while (s.empty()) {
try {
wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("pop:" + s.pop());
notify();
}
public synchronized void write() {
while (!s.empty()) {
try {
wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("push:" + s.push("a"));
notify();
}
}
class Consumer extends Thread {
Data data;
public Consumer(Data data) {
this.data = data;
}
@Override
public void run() {
while (true) {
data.read();
}
}
}
class Producer extends Thread {
Data data;
public Producer(Data data) {
this.data = data;
}
@Override
public void run() {
while (true) {
data.write();
}
}
}