CODEWITHSUNDEEP
java
Ravindra More
Ravindra More

Reputation: 13

Why printing a int static value gives object notation value, instead of actual value

I am trying to print static int value in main method of java, when I am printing it is giving me value as [Ljava.lang.String;@7852e922 as object notation instead of actual value. Could you please explain what is happening under internally.

Also, when I am trying using ClassName.varibaleName its working and printing correct value. Also, when I am printing using object. it is showing the correct result.

I am seeing the issue only when I am directly accessing the value of static variable in main method.

I also, tried creating other method and it is giving the result.

class Demo1 {

    static int a;

    public static void main(String a[]) {
        Demo1 demo1 = new Demo1();
        demo1.inc();
        Demo1 demo2 = new Demo1();
        demo2.inc();
        Demo1 demo3 = new Demo1();
        demo3.inc();
        System.out.print("Count value is=" + a);
        System.out.print(a);
        System.out.print("\n" + demo1.a);
        System.out.print(demo2.a);
        System.out.print(demo3.a);
    }

    public static void inc() {
        a = a + 1;
        System.out.println("Value a" + a);
    }

}

I am getting below Result: 

Value a1
Value a2
Value a3
Count value is=[Ljava.lang.String;@7852e922[Ljava.lang.String;@7852e922
333

But expecting Count value is= 3 instead of [Ljava.lang.String;@7852e922

Upvotes: 0

Views: 70

Answers (1)

Thilo
Thilo

Reputation: 262494

Your int a is not visible in a method that also has a local variable called String[] a (which will be used instead).

This is called "shadowing". The "closest" variable definition wins.

Use better variable names to avoid this.

Upvotes: 3

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