One job hopping up 8K, three times in five years

It has been said recently that , Now? java The initial salary is too low , Some programmers who have just joined the industry say that their wages are even 5 No digits ..... I worked for several years and didn't get much rise .

Look at others' monthly salary 2-3 ten thousand , In fact, it's not that difficult to say .

Talk about how to get 3 Ten thousand dollars , On the whole , By job hopping , From the beginning , In general, you can go through 5 Annual jump 3 Time , Or less 3 Annual jump 2 Time , Good operation , You can earn a monthly salary 3w.

1. For the time being, let's set the entry conditions lower , College non computer major , After a training course . First job , Don't mention salary yet , Don't look at whether you work overtime , As long as the company is not 2,3 Closed within the year , Just go in and do .

When you do , Use half a year to get familiar with the addition, deletion, modification and check , At the same time, be familiar with some project development processes , If you have a college degree , You have to upgrade quickly , At the same time, participate in troubleshooting more . If you are not a computer major , This period of time is very bitter , But you have to endure . In the project team, I improved very fast , Basically half a year , At least in terms of adding, deleting, modifying and checking , It should be similar to those who came from a major .

2. Six months after the first job , Start accumulating valuable skills , What skills are needed for senior posts in large factories , such as java Aspects should be highly concurrent distributed components . Six months after the first job , Don't continue to stick to adding, deleting, modifying and checking , You can improve by watching videos in series .

3. Try to fill your first job with 1 year , It is best to 1 And a half years , But not more than 2 year . But it's full 1 In the year , Start preparing for the interview .

The highest goal of the interview is the Internet company , The second is foreign enterprises , Another difference is to be sent to a foreign enterprise or the Internet as an expatriate , The next step is a medium-sized company , But the second job is better not to continue working in a small company .

Because mastering skills and interviewing are definitely two directions , And there is always a process from the beginning of the interview to the success of the interview , So in the first job 1 After year , You can prepare for the interview .

Some people worry that they won't get through the interview , I can only say don't be idle , Even a little manual use of the brain to review , It's not that hard .

Here I share one for free GitHub Superscript star 120k Of 《Java Comprehensive analysis of core advanced knowledge 》 Let's see , Whether it's used to consolidate the foundation , You can collect one for technical improvement , Read and learn thoroughly , Interview big factory so easy.

Here are some screenshots , Free download method is attached at the end of the article .

( One ). Basics

1、Java Basic skill

• Java introduction ( Basic concepts and common sense )
• Java grammar
• Basic data type
• Method ( function )

2、Java object-oriented

• Classes and objects
• Three characteristics of object orientation
• Modifier
• Interfaces and abstract classes
• Other important knowledge points

3、Java The core technology

• aggregate
• abnormal
• Multithreading
• File with the I\O flow

( Two ). Concurrent

1、 Concurrent container

• JDK Summary of concurrent containers provided
• ConcurrentHashMap
• CopyOnWriteArrayList
• ConcurrentLinkedQueue
• BlockingQueue
• ConcurrentSkipListMap

2、 Thread pool

• The benefits of using thread pools
• Executor frame
• ( important )ThreadPoolExecutor Class introduction
• ( important )ThreadPoolExecutor Examples of use
• Several common thread pools are explained in detail
• ScheduledThreadPoolExecutor Detailed explanation
• Thread pool size determination

3、 Optimistic lock and pessimistic lock

• What is pessimistic lock and optimistic lock
• There are two common ways to implement optimistic locks
• Disadvantages of optimistic lock
• CAS And synchronized The use of

( 3、 ... and ). JVM

1、Java Memory area

• summary
• Run time data area
• HotSpot Exploring virtual machine objects
• Key supplementary content

2、JVM Garbage collection

• uncover JVM The mystery of memory allocation and recovery
• The object has died ?
• Garbage collection algorithm
• Garbage collector

3、JDK Monitoring and troubleshooting tools

• JDK Command line tools
• JDK Visual analysis tools

（ Four ） The Internet 、linux、 Data structure and algorithm 、 database 、 The system design 、 Must know tool 、 Interview guide

Because the space is limited , Other contents will not be shown one by one , This advanced note has a total of 512 page . It should be very helpful for small partners who want to advance , I hope it can help you .

You can click on the business card below for free .