Eclipse 各种小图标的含义

Eclipse的Package Explorer和Outline中用图标表示了很多内容，其实能看懂这些图标在编程中也是很有用的。

绿色的小圆表示公有类型：如果是实心的就是函数（），如果是圈就表示是变量（）。
红色的矩形表示私有类型：如果是实心的就是函数（），如果是空心就表示是变量（）。
保护类与保护函数用的是黄色的菱形：大菱形表示是函数（），小菱形表示是变量（）。

如果有一个向上的小三角就表示这是个函数，并且会抛出异常。（）
如果有一个类似表型的圆圈就表示该变量或函数是synchronized（线程同步）。（）

如果小图标出现一个C，就表示这是构造函数（）。
      如果小图标出现一个A，就表示这是抽象函数（abstract）（）。
      如果小图标出现一个F，就表示这是抽象函数（final）。（）
      如果小图标出现一个S，就表示这是静态函数（static）（）

类的图标是一个大C，表示一个类（），如果带一个放音键似的三角，那就代表这个类是存在main函数的类（）

http://help.eclipse.org/neon/index.jsp?topic=/org.eclipse.jdt.doc.user/reference/ref-icons.htm

Objects

	compilation unit (*.java file)
	Java file which is not on a build path
	class file
	generic file (unknown content type)
	unknown object
	Java scrapbook page (*.jpage file)
	Java scrapbook page (evaluation in progress)
	JAR description file
	JUnit test result file

	Java working set
	Java model
	library container
	JAR file with attached source
	JAR file without attached source
	class folder with attached source
	class folder without attached source
	source folder
	package
	empty package
	logical package
	empty logical package
	package only containing non Java resources

	package declaration
	import container
	import

	class (public)
	interface (public)
	enum type (public)
	annotation type (public)

	package visible class
	private class
	protected class

	default field (package visible)
	private field
	protected field
	public field

	default method (package visible)
	private method
	protected method
	public method

Object adornments

	marks project as Java project
	decorates files and folders if they are on the build path of their enclosing Java project

	decorates Java projects and working sets that contain build path errors
	this Java element causes an error
	this Java element causes a warning
	this Java element is deprecated

	constructor
	abstract member
	final member
	static member
	default method
	synchronized member
	native method
	transient field
	volatile field
	type with public static void main(String[] args)

	implements method
	overrides method

	type with focus in Type Hierarchy or Quick Outline/Hierarchy
	maximal expansion level in Call Hierarchy
	recursive call in Call Hierarchy

	compilation unit containing an abstract class as primary type
	compilation unit containing an interface as primary type
	compilation unit containing an enum as primary type
	compilation unit containing an annotation as primary type

Build path

	class path variable
	JAR with attached source
	JAR without attached source
	system library
	build path ordering

	inclusion filter
	exclusion filter
	access rules
	Javadoc location
	source attachment
	native library location
	output folder

Code assist

	HTML tag
	Javadoc tag
	local variable
	template
	SWT template

Compare

	field
	method

Debugger

	debug launch
	run launch
	terminated run launch
	process
	terminated process
	debug target
	suspended debug target
	terminated debug target

	thread
	suspended thread
	stack frame
	running stack frame
	adornment that marks a stack frame that may be out of synch with the target VM as a result of an unsuccessful hot code replace
	adornment that marks a stack frame that is out of synch with the target VM as a result of an unsuccessful hot code replace
	inspected object or primitive value
	watch expression
	local variable

	monitor
	a monitor in contention
	a thread in contention for a monitor
	a monitor that is owned by a thread
	a thread that owns a monitor

	current instruction pointer (top of stack)
	current instruction pointer

	enabled line breakpoint
	disabled line breakpoint
	adornment that marks a breakpoint as skipped
	adornment that marks a line breakpoint as installed
	adornment that marks a breakpoint as conditional
	adornment that marks an entry method breakpoint
	adornment that marks an exit method breakpoint

	field access watchpoint
	field modification watchpoint
	field access and modification watchpoint
	adornment that marks a watchpoint as installed

	exception breakpoint
	runtime exception breakpoint
	disabled exception breakpoint
	adornment that marks an exception breakpoint as caught
	adornment that marks an exception breakpoint as uncaught
	adornment that marks an exception breakpoint as scoped
	adornment that marks an exception breakpoint as installed

Editor

	implements
	overrides
	quick assist available
	search match

JUnit

	test
	currently running test
	successful test
	failing test
	test throwing an exception
	ignored test
	test with an assumption failure

	test suite
	currently running test suite
	successfully completed test suite
	test suite with failing test
	test suite with exception throwing test

	caught exception
	stack frame element

NLS tools

	skipped NLS key
	translated NLS key
	untranslated NLS key

Quick fix

	quick fixable error
	quick fixable warning

	add
	change
	change cast
	fix multiple problems
	move to another package
	remove
	remove import
	rename
	rename in file
	surround with try/catch

Refactoring

	general change
	composite change
	text change
	file change
	Stop error
	Error
	Warning
	Information
	Change filter

Search

	Java Search
	search for declarations
	search for references

Search - Occurrences in File

	a general match
	read access to local or field
	write access to local or field

Type Hierarchy view

	type outside of selected package
	interface outside of selected package

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