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Thread: Initialization in class

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    Default Initialization in class

    Hello everyone I am a beginner and this is my first post on this forum and also english is not my first language but I hope it is good enough to make you guys understand my question.

    The question is why I get error when initializing a variable like this in a class ?
     
    public class MyClass {
     
    	int a;
    	a=5;  // error
     
    }

    I don't get error when doing it like this.

     
    public class MyClass {
     
    	int a = 5;
     
     
    }


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    Default Re: Initialization in class

    Declaring a variable and initializing in a single line is allowed outside of a method. Assigning a value to a variable other than during a single-line declaration and initialization is not allowed outside of a method or an initialization block.

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    Default Re: Initialization in class

    Thanks for the answer.

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    Default Re: Initialization in class

    Since you said you were a beginner, here is a little information that might help you out or anyone else who happens to look at this post.

    You really don't want to initialize a variable outside a constructor unless it is a final. Also you need an access modifiers as well.

    public class MyClass {
     
    	private final int a = 5;
     
    }

    otherwise you would do,

    public class MyClass {
     
           private int a;
     
           public MyClass() {
                 a = 5;
           }
     
    }

    hopefully you find this information useful

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