public class Hw05 { public static void main(String[] args) { int sum; // 積和結果保持変数 for (int i=1; i<=9; i++) { sum = 0; // 初期化 for (int j=1; j<=9; j++) { sum += i*j; System.out.print(i + "*" + j + "+"); } System.out.println(" = " + sum); } } }