sumnumbers.java

Java the UML Way 书中所有源码

/*
 * SumNumbers.java   E.L. 2001-08-12
 *
 * The program calculates and prints all sums in the interval [0, 9] 
 */

class SumNumbers { 
  public static void main(String[] args) { 
    for (int lineCounter = 0; lineCounter < 10; lineCounter++) {
      int sum = 0;
      for (int number = 1; number <= lineCounter; number++) {
        sum += number;
        System.out.print(number + " ");
      }
      System.out.println("The sum is: " + sum);
    }
  } 
} 

/* Example Run:
The sum is: 0
1 The sum is: 1
1 2 The sum is: 3
1 2 3 The sum is: 6
1 2 3 4 The sum is: 10
1 2 3 4 5 The sum is: 15
1 2 3 4 5 6 The sum is: 21
1 2 3 4 5 6 7 The sum is: 28
1 2 3 4 5 6 7 8 The sum is: 36
1 2 3 4 5 6 7 8 9 The sum is: 45
*/