知道下面的程序輸出的內(nèi)容么?
public class Singleton {
private static Singleton singleton = new Singleton();
public static int counter1;
public static int counter2 = 0;
private Singleton() {
counter1++;
counter2++;
}
public static Singleton getSingleton() {
return singleton;
}
}
public class TestSingleton {
public static void main(String args[]){
Singleton singleton = Singleton.getSingleton();
System.out.println("counter1="+singleton.counter1);
System.out.println("counter2="+singleton.counter2);
}
}
