Eclipse中很少用到的键<不断更新>

Generalize Type	对对象的声明可用。
Use Supertype Where Possible	对类可用。

Correct Identation 选中代码然后对齐

Shift+Left/Right 左移或者右移

Use Supertype Where Possible 对类使用

Matching Bracket 找到匹配的括号

To find a matching bracket select an opening or closing bracket and pressCtrl+Shift+P or selectNavigate > Go To > Matching Bracket. You can alsodouble click before an opening or after a closing bracket - this selects the text between the two brackets.

Wrap strings

You can have String literals wrapped when you edit them. For example, if you have code like this: String message= "This is a very long message."; position your caret after the word "very" and press Enter. The code will be automatically changed to: String message= "This is a very" + " long message."; This behavior can be customized in the Java > Editor > Typing preference page.

Java type indicator

Enable the Java Type Indicator on theGeneral > Appearance > Label Decoration preference page to find out what the first type in a compilation unit or class file is. An adornment is shown for interfaces, annotations, and enums, while an ordinary class stays undecorated.

Word wrap in Variables view

The details area of the debugger's Variables and Expressions views supports word wrap, available from the view drop-down menu.

http://help.eclipse.org/helios/index.jsp?topic=/org.eclipse.jdt.doc.user/tips/jdt_tips.html