CODEWITHSUNDEEP
java
Parag M
Parag M

Reputation: 93

Access another class's public variable in constructor

I have class C1 and class C2. C1 has a public boolean variable b1.

The value of b1 is set in C1 and then I create a object of Class C2 in C1. ie in C1 I have : 

b1 = true; 
C2 c2 = new C2();

Now in constructor of C2 , I want to make a decision based on the value of b1. How can I access the value of b1 (which is a variable of Class C1) in the constructor of C2 ? The constructor of C2 cannot have any arguements.

Thanks

Upvotes: 0

Views: 739

Answers (3)

John Kane
John Kane

Reputation: 4443

There are a couple of ways that you could do this. You could also make b1 static, what @Logard suggested, or C1 could be made into a Singleton:

public enum C1{
    INSTANCE;

    public boolean b1=false;  

}

public class C2{

    public C2(){
        System.out.println(C1.INSTANCE.b1);
    }

}

Upvotes: 0

Logard
Logard

Reputation: 1513

If the C2 class is defined as an inner class of C1 you can access its outer class like this:

C1.this.b1

Upvotes: 3

amicngh
amicngh

Reputation: 7899

In C2 make a object of C1 and then check.

boolean check=new C1().b1

Upvotes: -1

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