Lab: Get familiar with JBuilder

這是課本Display 1.1的練習

以下為原始程式碼部分:
public class lab1
{
public static void main(String[] args)
{
System.out.println("Hello everyone.");
System.out.println("I'm Kai.");
System.out.println("Welcome to Java.");
System.out.println("Let's demonstrate a simple calculation.");
int answer1,answer2,answer3,answer4;
answer1 = 5 + 5 + 5;
answer2 = 9 - 8 - 7;
answer3 = 7 * 7 * 7;
answer4 = 99 / 11;
System.out.println("5 plus 5 plus 5 is " + answer1);
System.out.println("9 minus 8 minus 7 is " + answer2);
System.out.println("7 times 7 times 7 is " + answer3);
System.out.println("99 divide 11 is " + answer4);
}
}