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class Singleton {
private static Singleton obj= new Singleton();
public static int counter1;
public static int counter2 = 2;
private Singleton() {
counter1++;
counter2++;
// System.out.println("Singleton counter1:" + counter1);
// System.out.println("Singleton counter1:" + counter2);
}
public static Singleton getInstance() {
// System.out.println(obj.counter2 + obj.counter1);
return obj;
}
}
public class Test {
public static void main(String[] args) {
// System.out.println("Singleton.counter1:" + Singleton.counter1);
// System.out.println("Singleton.conuter2:" + Singleton.counter2);
// System.out.println("¾²Ì¬±äÁ¿¼°¹¹Ô캯ÊýÒѾ­³õʼ»¯¸½ÖµÍê±Ï");
Singleton obj =Singleton.getInstance();
System.out.println("obj.counter1==" + obj.counter1);
System.out.println("obj.counter2==" + obj.counter2);
}

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Singleton   counter1:1
Singleton   counter1:1
Singleton.counter1:1
Singleton.conuter2:2
¾²Ì¬±äÁ¿¼°¹¹Ô캯ÊýÒѾ­³õʼ»¯¸½ÖµÍê±Ï
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obj.counter1==1
obj.counter2==2
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public static int counter1;
public static int counter2 = 2;
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