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public class StaticBlock extends Object {
public static synchronized void staticA() {
System.out.println("entering staticA()");
try {
Thread.sleep(5000);
} catch (InterruptedException x) {
}
System.out.println("leaving staticA()");
}
public static void staticB() {
synchronized (StaticBlock.class) {
System.out.println("in staticB() : inside sync block");
try {
Thread.sleep(2000);
} catch (InterruptedException x) {
}
}
}
public static void main(String[] args) {
Runnable runA = new Runnable() {
public void run() {
StaticBlock.staticA();
}
};
Thread threadA = new Thread(runA, "A");
threadA.start();
try {
Thread.sleep(200);
} catch (InterruptedException x) {
}
Runnable runB = new Runnable() {
public void run() {
StaticBlock.staticB();
}
};
Thread threadB = new Thread(runB, "B");
threadB.start();
}
}
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