non-local variables in java

Question

pls, can someone explain with examples what "non-local" variables are in java?

My Understanding Non-local variables are object variables. But when called object variables would that be referring to the variables used in the object methods?

The term 'non-local variable' is not typically used in Java. https://docs.oracle.com/javase/tutorial/java/nutsandbolts/variables.html gives you an outline of what's what. — pvg, Mar 07 '17 at 04:59

Raman Sahasi · Answer 1 · 2017-03-07T05:14:38.203

2

In Java Programming language, there are 4 kinds of variables.

Local Variables : These are variables that are declared within method scope. A method will often store its temporary state in local variables.

If you ask for Non-Local variables, then you'd refer to all other variables but local; like

Instance Variables (Non-Static Fields)
Class Variables (Static Fields)
Parameters

edited Mar 07 '17 at 05:14

answered Mar 07 '17 at 05:05

Raman Sahasi

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score 1 · Answer 2 · answered Mar 07 '17 at 05:05

Instance variables(non-local) are declared in a class, but outside a method, constructor or any block.Instance variables belong to an instance of a class, Every object has it’s own copy of the instance variables

public class InstanceClassSample {

    String name = "Java";

    public void testName(){

        //instanceClassSample and instanceClassSample2 will have it own copy of name 

        InstanceClassSample instanceClassSample = new InstanceClassSample();
        InstanceClassSample instanceClassSample2 = new InstanceClassSample();

        System.out.println(instanceClassSample.name);
        System.out.println(instanceClassSample2.name);      

    }



}

score 0 · Answer 3 · answered Mar 07 '17 at 04:59

A local variable will be declared within { and } of a method. Outside the the braces, the variable will no longer be accessible and garbage collected. As far as I know object variable is not really a thing in Java, you can have an instance variable or a class variable, those would technically be your 'non-local' variables.

non-local variables in java

3 Answers3