打印9*9乘法表需要使用for循环 public class Demo { public static void main(String[] args) { for (int i=1;i<10;i++ ) { for (int j=1;j<=i;j++ ) { System.out.print(j + " * " + i + " = " + (i * j)+"\t"); } System.out.println();//换行 } } }