要点:循环嵌套
package ninenine;
public class ninenine {
public static void main(String[] args) {
for(int i = 1;i<=9;i++)
{
for(int j=1;j<=i;j++)
{
System.out.printf("%2d *%2d=%2d",j,i,j*i);
}
System.out.println();
}
}
}
运行结果