小编com*_*eek的帖子

是否有用于在Java中创建指定大小的标识矩阵的实用程序？

import java.io.DataInputstream;
class Student
{
int roll;
void getdata(int r)
 {
 roll=r;
 }
void putroll()
 {
 System.out.println("The roll number is: "+roll);
 }
}

class Test extends Student
{
int sub1,sub2;
void getmarks(int a, int b)
 {
 sub1=a;
 sub2=b;
 }
void putmarks()
 {
 System.out.println("Marks 1= "+ sub1 + "\n Marks 2= "+sub2);
 }

interface Sport
{
float spt=6.0f;
void putspt(float num);
}


class Result extends Test implements Sport
{
float total;
float n;
public void putspt(float num)
 {
 x=num;
 if(x>6 && …