public class Main {
public static void main(String[] args) {
int sum = 0;
int j = 1;
for(int i = 1;i<=9;i++){
for(j = 1;j<=i;j++){
sum = i*j;
System.out.print(j + "*" + i + "=" + sum + "\t");
}
System.out.println();
}
}
}
运行如下: