代码1

package lesson.l5_loop;
//九九乘法表
//1*1=1
//2*1=2	2*2=4
//3*1=3	3*2=6	3*3=9
//4*1=4	4*2=8	4*3=12	4*4=16
//5*1=5	5*2=10	5*3=15	5*4=20	5*5=25
//6*1=6	6*2=12	6*3=18	6*4=24	6*5=30	6*6=36
//7*1=7	7*2=14	7*3=21	7*4=28	7*5=35	7*6=42	7*7=49
//8*1=8	8*2=16	8*3=24	8*4=32	8*5=40	8*6=48	8*7=56	8*8=64
//9*1=9	9*2=18	9*3=27	9*4=36	9*5=45	9*6=54	9*7=63	9*8=72	9*9=81
public class MultiplicationTable {public static void main(String[] args) {for (int i = 1; i <=9 ; i++) {for (int j = 1; j <=i ; j++) {System.out.print(i+"*"+j+"="+i*j+"\t");}System.out.println();}}
}

代码2

package lesson.l5_loop;public class MultiplicationTable2 {public static void main(String[] args) {for (int i = 1; i <=9 ; i++) {for (int j = i; j <=9 ; j++) {System.out.print(i+"*"+j+"="+i*j+"\t");}System.out.println();}}
}