九九乘法口诀

public class Test {
public static void main(String[] args){
//九九乘法口诀
System.out.print("    ");
for(int i=1;i<10;i++){
System.out.print(i+"    ");
}
System.out.println();
for(int i=1;i<10;i++){
System.out.print(i+"   ");
for(int j=1;j<10;j++){
if(i*j<10) System.out.print(i*j+"    ");
else System.out.print(i*j+"   ");
}
System.out.println();
}

}
}