Java

Java NIO Why out of heap memory OOM Yes ?

Call the police one day ： A service deployed by a machine suddenly cannot be accessed . Remember the first reaction, log in to the machine and vie...
2022-02-01 18:54 views 190

Ruiji takeout based on springboot+vue Implementation of small program ordering system

Function overview technology stack 1). The user layer is building the front-end page of the system management background in this project , We'll ...
2022-01-29 18:30 views 90

Still using double decks for loop ? Come and try it （ Summary of work problems ）

As a young intern in the company , I encountered a problem when making a small function of a module ： For example, using sql The following data we...
2022-01-28 17:54 views 19

Flink Same DataStream For multiple services at the same time

one ： Background used in our project Flink of Java client Data source for data processing ：kafka Sending source ：kafka There was only one busine...
2022-01-27 14:23 views 37

dark horse JAVA P171 Thread safety issues , Simulated thread safety cases ： withdraw money

package com.itheima.d3_thread_safe;public class Account { private String cardId; private double money; // Account balance public Account(...
2022-01-27 13:02 views 22

【 Hard core sharing 】Lambda expression （ one ）

1, preface Lambda An expression is an anonymous function , Some similar to JavaScript Closure in , Pass a function as an argument , The code de...
2022-01-24 21:16 views 27

Go to Ali for an interview Java development , Three sided quilt P8 architect “ shame ” Yes ....

We are programmers , In addition to entrepreneurship , I'm afraid going to a big factory is my biggest dream . with BAT The first-line Internet co...
2022-01-24 14:35 views 39

JDBC Six steps of programming 123456

import com.mysql.jdbc.Driver;import java.sql.Connection;import java.sql.DriverManager;import java.sql.SQLException;import java.sql.Statement;public...
2022-01-21 14:56 views 34

Java Design and implementation of mine sweeping game

This game has a long history , Since mine sweeping was developed, it has been optimized countless times , This game is becoming more and more popu...
2022-01-18 19:06 views 72

java Data structure and algorithm —— Quick sorting method

java Data structure and algorithm —— Quick sorting method
2022-01-17 21:39 views 25
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