Operators Java Tutorial

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  4. Using ++ and -- with floating-point variables
public class MainClass{
  public static void main(String[] arg){
     double a = 12.12;
     
     System.out.println( a-- );
     System.out.println( a++ );
     System.out.println( --a );
     System.out.println( ++a );
  }
}
12.12
11.12
12.12