Local Variable vs Class Variable

When a variable is defined in a class it is the gloabl variable and it can be accessed from any class or method. When a variable is defined inside a method then it is the local variable.Check the below example which explains the below concepts.

package Example1;

public class LocalVsGlobal {
 static int interest=10;//global variable
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  display();
  System.out.println("inside the main method "+interest);
 }
 public static void display(){
  int interest=8;// local variable
  System.out.println("Inside the display method "+interest);
 }
}

output:
Inside the display method 8
inside the main method 10

The value of interest inside display method uses the local variable value which is 8, while the interest value inside main method uses gloabl variable and that is the reason it is different.
If we want the gloabl variable value to be updated with the local variable value then just remove the keyword int it and it affects all value in all places. >>>Pass By value
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