Scope in Java

Scope In Java

Scope of a variable is the part of the program where the variable is accessible. Variables are only accessible inside the bracket {} they are created.

Method Scope

If we created variables inside the method, we could use them inside but not outside the method.

public class Main {
    public static void main(String[] args) {
        System.out.println(a); // this is wrong we cannot use a here
    }
    public static void myMethod() {
        int a = 10;
        System.out.println(a); // we can use a here
    }
}

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Block Scope

Block means code between {} brackets. Variables are only accessible inside the bracket {}.

public class Main {
    public static void main(String[] args) {
        System.out.println(a); // this is wrong we cannot use a here

        {
            int a = 10;
            System.out.println(a); // you can use it here.
        }
    }
}

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