Java

Big factory Java Interview questions (45)- Design a high concurrency system

1 How to design a high concurrency system for interview questions ?2 This question is asked by the examination site analysis , It's going to take...
2020-07-31 00:06 views 50

BATJ Big factory Java Interview questions (25) - Redis Cluster application and principle

1 Interview questions Redis The working principle of cluster mode ? In cluster mode ,key How is it addressed ? What are the addressing algorithms ...
2020-07-31 00:05 views 50

2020 The latest Tencent Java Interview questions

say something JVM Memory model . What is a thread's program counter for ? On the garbage collection algorithm in the heap ? Why does the new gener...
2020-07-29 23:06 views 18

Java Regular expression matching date and its basic use

Don't talk much nonsense , Direct code ： // matching @Test public void match() { String qq = "2017-09-19"; // The ...
2020-07-28 10:43 views 41

java： Array and its common algorithms

java： A detailed summary of array common part algorithm , Concept arrays are containers , That can store elements of the same type “ container ”; b...
2020-07-25 15:10 views 39

Java Medium Future Custom implementation of pattern principle

Future The pattern is similar to js Medium ajax etc. , Is an asynchronous data acquisition mechanism , Here I understand some of my own image throu...
2020-07-24 20:45 views 33

ObjectMapper Detailed introduction , It's really that simple

brief introduction ObjectMapper class (com.fasterxml.jackson.databind.ObjectMapper) yes Jackson Main classes of , It can help us quickly carry out...
2020-07-24 11:58 views 60

Daily record ——JVM—new Object（）

one , Object creation process 1.loading： Load corresponding class class file .2.linking： Verify file format （verification）, Allocate memory for st...
2020-07-22 00:39 views 15

Java- Class conversion tool class

1. This is a tool class for class direct conversion , Can be applied to Object conversion Object list conversion Attribute copy , If and...
2020-07-20 17:14 views 41

JavaBean Object conversion tool class

package com.example.util;import com.alibaba.fastjson.JSON;import org.apache.commons.collections.CollectionUtils;import org.apache.commons.lang.Arra...
2020-07-20 17:14 views 46
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