Thread: 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;
 
 
}

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.

Thanks for the answer.

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