wjj16387142 Ask a question 2022-11-04 18:03

Question Where did I go wrong? Who can see

公共类kt22114{ 公共静态void main(String[] args) { int[] array={2,3,4,5,6,7,8}; system.out.println(array.length) int[] array1=new int[5]; for(int i=0;i

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czzw818 Ask a question 2022-11-06 11:20

Question java validates multiple sets of accounts and passwords

ing[] {"a","b","c","d"}; for(int i; i< 3) { while(times< 3) { system.out.println(" Please enter username: "); Scanner s = new Scanner(system.in); String str1 = s.next(); system.out.println(" Please enter password: "); Scanner p = new Scanner(system.in); String str2 = p.next(); if(! str1.equals(name[i])||! str2.equals(password[ i])) { times++; if(times< =2) { int a=3-times; system.out.println(" Incorrect user name or password, please re-enter! Remaining input times: "+a); }} if...

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WJKENT Ask a question 2022-11-07 11:43

Question A new error occurred in search of a solution

float yswZf; public XueSheng() { Scanner sc=new Scanner(system.in); < / span > < br / > < span > system. Out. Print(" please enter the student number: "); xueHao=sc.next(); < / span > < br / > < span > system. Out. Print(" please input your name: "); xingMing=sc.next(); < / span > < br / > < span > system. Out. Print(" please enter the gender: "); xingBie=s c.next(); } public void LuRuCj() { Scanner sc=new Scanner(system.in); system.out.print(" Please enter the language score "); yuWenCj=sc.next(); system....

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daying303 Ask a question 2022-11-07 16:04

Question system. NullReferenceException: "the object reference not set to an instance of an object."

Why is this error reported? userName, pwd, and UType all have values

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cys23_2012 Ask a question 2022-11-07 17:21

Question If the system.vbs script file cannot be found in Windows 11, what can I do

Every time win11 system starts up after a period of time, there will be an error pop-up, and the script file system.VBS cannot be found. Is this a virus? Is there any solution? Please answer < br / > < div class = "aw - list - img > ...

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admin Ask a question 2022-11-08 11:58

Question 关于WPF的MouseLeftButtonDown问题，如何化解？

Canvas 的 MouseLeftButtonDown 事件不执行 完整代码 using system;using system.Collections.Generic;using system.Linq;using system.Net;using system.Text;using system.Threading.Tasks;using system.Windows;usin g system.Windows.Controls;using system.Windows.Data;using system.Windows.Documents;using system.Windows.Input;using system.Windows.Media;using system.Windows.Media.Imaging;using system.Windows.Navigat ion;using system.Windows.Shapes; namespace WpfApp1{ /// /// MainWindow.xaml 的交互逻辑 /// public partial class MainWindow : Window { public MainWindow() { Initial...

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dm2213692 Ask a question 2022-11-08 22:07

Question 不映射forGET/emps

ps").param("pn","1")) .andReturn(); MockHttpServletRequest request = result.getRequest(); PageInfo pi= (PageInfo) request.getAttribute("pageInfo"); system.out.println("当前页码："+ pi.getPageNum()); system.out.println("总页码："+pi.getPages()); system.out.println("总记录数："+pi.getTotal()); system.out.println("在页面需要连续显示的页码"); int[] nums = pi.getNavigatepageNums(); fo r (int i : nums){ system.out.println(""+i); } List list = pi.getList(); for (Employee employee : list){ system.out.println("ID："+employee.getEmpId()+"==>Name:"+employee.ge...

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donglei2860 Ask a question 2022-11-09 20:04

Question LINQ to Entities unrecognized method "system.String ToString()"

Symptom and background of the problem LINQ to Entities "system.String ToString()" When using the.NET framework, ef is not efcore. In the past, linq used tostring with no error. Now all o f a sudden, it is not allowed. Insert code with code block function, do not paste screenshot ...

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ZOOOOM Ask a question 2022-11-10 15:03

Question Error: Cannot find module 'C:\Windows\system32\node_modules\@vue\cli\bin\vue.js'

问题遇到的现象和发生背景 安装vue/cli结束后想查询vue版本时报错 运行结果及报错内容 怎么解决！！ 展开全部

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crane_hui Ask a question 2022-11-10 16:02

Question Help! How to solve the system pause error?

using vs2022

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dujiang001 Ask a question 2022-11-10 18:04

Question The message sent indicates that data cannot be read from the transport connection: net_io_connection closed...

using system; using system.Collections.Generic; using system.ComponentModel; using system.Data; using system.Drawing; using system.IO; using system.Linq; using system.Net.Mail; using system.Ne t.Sockets; using system.Text; using system.Threading.Tasks; using system.Windows.Forms; namespace WindowsFormsApp1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { bool a = SendEmail(); } public bool SendEmail() {...

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boersaisi Ask a question 2022-11-10 23:02

Question java(idea) failed to connect to SQLserver

try { Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");//加载JDBC-MySQL驱动 system.out.println("服务器加载成功！"); } catch (Exception e) { system.out.p rintln("服务器加载失败！"); } String uri = "jdbc:sqlserver://169.254.85.133:1433;DatabaseName=Online Uproad system";//这里ip地址使用ip4 try { con = DriverManager. getConnection(uri, "testlogin", "123456"); //连接代码 system.out.println("服务器连接成功！"); con.close(); } catch (SQLException e) { system.out.println("服务器连接失败！"); ...

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doubo219 Ask a question 2022-11-12 15:02

Question （豆机）为什么最后数组不是呈正态分布，且数组总和不是输入的m值

import java.util.Scanner;import java.util.Random; public class boliqiu { public static void main(String[] args) { Scanner input = new Scanner(system.in); system.out.println("请输入要掉落的小球数量："); int m = input.nextInt(); system.out.print("行数："); int n = input.nextInt(); system.out.println("\n");//为了格式好看 int[] a = new int[n+1];//定义n+1个空值块 int num; int sum = 0; for(int j = 0;j...

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duanyu11111 Ask a question 2022-11-13 00:02

Question Use Eclipse to connect to the MySQL database error

system.out.println("加载驱动成功"); } catch(Exception e){ system.out.println("加载驱动失败"); } try{ String url="jdbc:mysql://localhost::3306/"+database+"characterEnco ding=utf-8&&useSSL=false"; conn=DriverManager.getConnection(url,account, password); system.out.println("连接数据库成功"); }catch(SQLException e1){ system.out.println("--- -------------------------"); system.out.println("连接数据库失败"); e1.printStackTrace();//打印报错信息 system.out.println("----------------------------"); } //连接数据库 } } ...

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liulichen1990 Ask a question 2022-11-13 00:02

Question 用Eclipse连接MySQL数据库报错了怎么回事

count, String password, String database){ //连接驱动 try{ Class.forName("com.mysql.jdbc.Driver"); system.out.println("加载驱动顺利"); } catch(Exception e){ system.out.println("加 载驱动失败"); } try{ String url="jdbc:mysql://localhost::3306/"+database+"characterEncoding=utf-8&&useSSL=false"; conn=DriverManager.getConnection(url,account, password); Sys tem.out.println("连接数据库顺利"); }catch(SQLException e1){ system.out.println("----------------------------"); system.out.println("连接数据库失败"); e1.printStackTrace();//打印报错信息 ...

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