Available Layers » lang#java

Description
Feature
Install
Layer options
Key bindings

Description

This layer is for Java development.

Feature

code completion: autocomplete layer
code formatting: format layer
refactoring
syntax checking: checkers layer
REPL(requires jshell)
code runner
debug: check out the debug layer

Install

To use this configuration layer, update your custom configuration file with:

[[layers]]
  name = "lang#java"

Layer options

format_on_save: Enable/disabled code formatting when saving current file. The default value is false. To enable this feature:
```
[[layers]]
  name = 'lang#java'
  format_on_save = true
```

java_formatter_jar: Set the full path of google’s formater jar.

[[layers]]
  name = 'lang#java'
  java_formatter_jar = 'path/to/google-java-format.jar'

java_file_head: The default file header for new java file. by default it is:

[[layers]]
  name = 'lang#java'
  java_file_head = [
    '/**',
    ' * @author : `fnamemodify(expand("~"), ":t")`',
    ' * @created : `strftime("%Y-%m-%d")`',
    '**/',
    ''
  ]

Key bindings

Import key bindings

Key Bindings	Descriptions
`SPC l I`	Import missing classes
`SPC l R`	Remove unused classes
`SPC l i`	smart import class under cursor
`Ctrl-j I` (Insert)	Import missing classes
`Ctrl-j R` (Insert)	Remove unused classes
`Ctrl-j i` (Insert)	smart import class under cursor

Generate key bindings

Mode	Key Bindings	Descriptions
normal	`SPC l g A`	generate accessors
normal/visual	`SPC l g s`	generate setter accessor
normal/visual	`SPC l g g`	generate getter accessor
normal/visual	`SPC l g a`	generate setter and getter accessor
normal	`SPC l g M`	generate abstract methods
insert	`Ctrl-j s`	generate setter accessor
insert	`Ctrl-j g`	generate getter accessor
insert	`Ctrl-j a`	generate getter and setter accessor
normal	`SPC l g t`	generate toString function
normal	`SPC l g e`	generate equals and hashcode function
normal	`SPC l g c`	generate constructor
normal	`SPC l g C`	generate default constructor

Code formatting

The default formater of java language is google’s formater jar. You need to download the jar and set the java_formatter_jar layer option.

The default key bindings for format current buffer is SPC b f. And this key binding is defined in format layer. You can also use g= to indent current buffer.

Maven support

Key Bindings	Descriptions
`SPC l m i`	Run maven clean install
`SPC l m I`	Run maven install
`SPC l m p`	Run one already goal from list
`SPC l m r`	Run maven goals
`SPC l m R`	Run one maven goal
`SPC l m t`	Run maven test

Gradle support

Key Bindings	Descriptions
`SPC l a b`	gradle build
`SPC l a B`	gradle clean build
`SPC l a r`	gradle run
`SPC l a t`	gradle test

Code runner

Key bindings	Descriptions
`SPC l r m`	run main method of current file
`SPC l r m`	run the current method
`SPC l r t`	run all test methods

Inferior REPL process

Start a jshell inferior REPL process with SPC l s i.

Send code to inferior process commands:

Key Bindings	Descriptions
`SPC l s b`	send buffer and keep code buffer focused
`SPC l s l`	send line and keep code buffer focused
`SPC l s s`	send selection text and keep code buffer focused