Eclipse的Package Explorer和Outline中用圖標表示了很多內容，其實能看懂這些圖示在程式設計中也是很有用的。

      綠色的小圓表示公有型別：如果是實心的就是函式（），如果是圈就表示是變數（）。
      紅色的矩形表示私有型別：如果是實心的就是函式（），如果是空心就表示是變數（）。
      保護類與保護函式用的是黃色的菱形：大菱形表示是函式（），小菱形表示是變數（）。

      如果有一個向上的小三角就表示這是個函式，並且會丟擲異常。（）
      如果有一個類似表型的圓圈就表示該變數或函式是synchronized（執行緒同步）。（）

      如果小圖標出現一個C，就表示這是建構函式（

      類的圖示是一個大C，表示一個類（），如果帶一個放音鍵似的三角，那就代表這個類是存在main函式的類（）

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