Global Variable VS Local Variable

In Java, variables are classified based on where they are declared and how they are accessed. The two main types are global (class-level) variables and local variables. Understanding their scope and behavior is essential for writing efficient programs. What is a Global Variable in Java? Java does not support true global variables like some other languages. Instead, it uses class-level variables, which behave similarly. These variables are declared inside a class but outside any method. Types of Class-Level Variables Static Variable → Shared by all objects Instance Variable → Separate copy for each object Example: class Test { static int x = 10 ; // class-level (global-like) public static void main ( String [] args ) { System . out . println ( x ); } } OutPut What is a Local Variable? A local variable is declared inside a method, constructor, or block and can only be used within that scope. Example: class Test { public static void main ( String [] args ) { int y = 5 ; // local variable