Java学生成绩管理系统

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/lijia111111/article/details/72083875

学生成绩管理系统
import java.util.Scanner;
class Person
{
	String name;
	String number;
}
class contact
{
	Scanner sc = new Scanner(System.in);
	Person a[]=new Person[100];
	int number=0;
		
	public String add(String name,String number)
	{
		a[this.number]=new Person();
		a[this.number].name=name;
		a[this.number].number=number;
		this.number++;
		return "添加成功";
	}
	
	public Person seek(String name)
	{
		int c = 0;
		for(int i=0;i<number;i++)
		{
			if((a[i].name).equals(name))
			{
	        	System.out.println("联系人： "+a[i].name+"   电话："+a[i].number);
	        	c = 1;
			}
		}
		if(c==0)  System.out.println("查询无果！");
		return null;
	}
	
	public void look()
	{
		for(int i=0;i<number;i++)
		{
			System.out.println("联系人： "+a[i].name+"   电话："+a[i].number);
		}
	}
	
	public String delete(String name)
	{
		for(int i=0;i<number;i++)
		{
			if((a[i].name).equals(name))
	        {
	            a[i]=a[number-1];
	            number=number-1;
	            return "删除成功";
	        }
	    }
	    return "shanchushibai";
	}
	
	
	
	void zcd()
	{
		System.out.println("-------------------主菜单---------------------");
		
		System.out.println("                   1、创建                    ");
		
		System.out.println("                   2、退出                    ");
		
		System.out.println("----------------------------------------------");
	}
	



	void ejcd()
	{
		System.out.println("----------------------------------------------");
		System.out.println("                   1、浏览                    ");
		
		System.out.println("                   2、查找                    ");
		
		System.out.println("                   3、添加                    ");
		
		System.out.println("                   4、删除                    ");
		
		System.out.println("                   5、退出                    ");
		
		System.out.println("----------------------------------------------");
	}
	
	
	
}
public class text6
{
	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);
		contact c = new contact();
		c.zcd();
		System.out.print("输入指令：");
		int a = sc.nextInt();
		if(a==1)  c.ejcd();
		else if(a==2) return;
	    else
    	{
	   		System.out.println("请输入正确的指令！");
	   		return;
	  	}
		int b = sc.nextInt();
		while(b!=5)
		{
			if(b==1)
			{
				c.look();
			}
			else if(b==2)
			{
				System.out.println("输入查找的名字：");
	    		String name1 = sc.next();
	    		c.seek(name1);
			}
			else if(b==3)
			{
				System.out.println("输入要添加信息：");
	            String name2 = sc.next();
	            String number = sc.next();
	    		c.add(name2,number);
			}
			else if(b==4)
			{
				System.out.println("输入删除的姓名：");
	    		    String name3 = sc.next();
	    		    c.delete(name3);
			}
			else if(b==5)
			{
				break;
			}
			
			System.out.println("输入指令：");
	        b = sc.nextInt();
		}
		
	}
}