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demo_login.Java

package demo;import java.util.*;public class demo_login {
   		 String[] Username = new String[20]; 	 String[] Password = new String[20]; 	public  void loginfirst(){
   		 		 Scanner input=new Scanner(System.in);		 int num=0;		 boolean sign = false;		  do{
    			  System.out.println("   温馨提示：请先注册！！！ ");			  System.out.println("            1.注册帐号                                 "); 			  System.out.println("            2.登录系统                                 "); 			  System.out.println("            3.退出系统                                 ");			  String a = input.next(); 	       switch(a){
    			  case "1": 			    do{
   				    System.out.println("请输入想要注册的用户名"); 			    Username[num] = input.next(); 			    			    System.out.println("请输入想要注册的密码"); 			    String passwordfirst = input.next(); 			    			    System.out.println("请再次输入密码"); 			    String passwordsecond = input.next(); 			    			    if(passwordfirst.equals(passwordsecond)){
    			    	 Password[num] = passwordfirst; 			         System.out.println("新用户："+Username[num]+"创建成功"); 			         sign = true;                      			     }else{
    			    System.out.println("两次输入的密码不一致"); 			    sign = false; 			        } 			   }while(!sign); 			    num++; 			    continue;			 case "2": 			    sign = false; 			    break; 			 case "3": 			    System.exit(-1); 			    } 	        }while(sign);			  	}		  	public void loginsecond(){
   		   boolean  flag=true;			Scanner in=new Scanner(System.in); 			  do{
    			    System.out.println("请输入登陆账号"); 			    String username = in.next(); 			    System.out.println("请输入密码"); 			    String password = in.next();			    			  for(int i=0;i

demo_run.java

package demo;import java.util.Scanner;public class  demo_run{
    		 public static void menu(){
   			System.out.println("--------***************----------");			System.out.println("         ->1.注册职工信息");			System.out.println("         ->2.查看职工信息");			System.out.println("         ->3.结束查看");			System.out.println("         请输入编号：");		}	  	 public static void main(String[] args) {
   		  String[] staffName = new String[10]; 		  String[] staffId = new String[10]; 		  String[] staffaddress=new String[10];		  String[] staffage=new String[10];		  Run T=new Run();			  	  Scanner in = new Scanner(System.in); 	  boolean flag = false; 	  int number = 0;	  Test use=new Test();	  use.loginfirst();	  use.loginsecond();	  	  do{
    	  System.out.println("请输入想要进行的操作"); 	  T.menu();	  String a = in.next(); 	  switch(a){
    	    case "1": 	      System.out.println("请输入要添加的职工姓名"); 	      staffName[number] = in.next(); 	      System.out.println("请输入要添加的职工编号"); 	      staffId[number] = in.next(); 	      System.out.println("请输入要添加的职工地址"); 	      staffaddress[number]=in.next();	      System.out.println("请输入要添加的职工年龄"); 	      staffage[number]=in.next();	      number++; 	      System.out.println("添加成功"); 	      flag = true; 	      break; 	    case "2": 	      for(int i=0;i

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