Getting a error message and I dont understand why public class DebugTwo2 { public static void main(String args[]) {    {       int a, b;       a = 7;       b = 4;       System.out.println("The sum is " + (a + b);       System.out.println("The difference is " + (a - b);       System.out.println("The product is " + (a * b);    }

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Getting a error message and I dont understand why
public class DebugTwo2
{
public static void main(String args[])
{
   {
      int a, b;
      a = 7;
      b = 4;
      System.out.println("The sum is " + (a + b);
      System.out.println("The difference is " + (a - b);
      System.out.println("The product is " + (a * b);
   }
    
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