class Demo_Array //创建对象
{
public static void main(String[] args) {
for(int i = 1;i <= 9;i++ ) { //循环
for(int j = 1; j <= i; j++ ) { //再循环
System.out.print(i + " * " + j + " = " + i * j + " "); //输出i*j结果
}
System.out.println(" "); //换行
}
}
}