intellij

 1. java/groovy

• file -> project structure -> project: select sdk
• file -> project structure -> modules: dependencies -> scope (compile: required to build, test, and run a project (the default scope).)
• maven: intellij has its own maven, if using command line maven, need to configure it it intellij -> preferences -> search 'maven' -> maven home path -> select command line maven
• 'maven' tab on right hand side of UI, under lifecycle,  has clean/validate/.. etc
• after performing a lifecycle say install, need to click 'refresh' icon or popup, sometimes it's out-of-sync and not showing 'dependencies' that's downloaded
• settings.xml: can be company customised

2. debug

• drop frame: step过头，跳回上一级函数，重新再来

3. read code

• navigate -> call hierarchy

4. auto generate code

• right click -> generate              //constructor, getter & setter (after define the variable)
• shift + command + T                //generate or update unit test

5. debug multi thread 

• suspend policy 'thread'                                          //link 3
• selective debugging by thread name                     //link 4
• 'monitor' status: blocked, waiting on a lock
• show 'monitor' status when deadlock happens     //link 6

6. reload all maven project button very important

• it's the refresh button in maven view

 

reference

1. IntelliJ debugging tricks

2. intelliJ IDEA | full course | 2020

3. switching between threads in intellij

4. explore intelliJ idea tools to debug multithreaded java apps

5. java thread status - what does "monitor" status mean?

6. show lock/monitor situation in IntelliJ when deadlock occurs

spock and groovy

 

1. spock configuration

• SpockConfig.groovy

2. define annotation in groovy file

@Target([ElementType.TYPE, ElementType.METHOD])

@Retention(RetentionPolicy.RUNTIME)

@interface myTag {

}

reference

1. spock include/exclude specification based on annotation