Hidden features of Eclipse [closed]

Question

Alright it can be a lame question, but everybody uses these things differently. What's some of the best time savers out there for this IDE.

Tom

Answer 1

Alt+Up or Alt+Down to move lines

Answer 2

ctrl-shift-r and its buddy, ctrl-shift-t, to open a resource or type, respectively. Resources includes all files in your open projects (including non-java files), and types includes java types either in your projects, or in a library included in the projects.

Answer 3

• CTRL-SHIFT-g : finds usages of the method or field under the cursor, absolutely necessary for understanding code
• CTRL-F6 : navigate between the list of open editor windows, if you just type it once and let go you toggle back to the previous editor window, doing this successively is a nice way to jump back and forth
• CTRL-t : on a class or method will show you the type hierarchy, very useful for finding implementations of an interface method for example

Answer 4

Alt-Shift-R stands for rename, not refactor. Refactoring is a more general term (as defined by the book).

Nevertheless, it is one of my favorite refactorings. Others include:

• Alt-Shift-M: Extract Method (when a code block or an expression is selected)

• Alt-Shift-L: Extract Local Variable (when an expression is selected)

Extract Local Variable is especially useful when I don't remember (or bother to type) the result type of a method. Assuming you have a method JdbcTemplate createJdbcTemplate() in your class, write some code such as this:

void someQuery() {
    createJdbcTemplate()
}

Select the expression createJdbcTemplate(), click Alt-Shift-L, type the name of variable and press enter.

void someQuery() {
    JdbcTemplate myTemplate = createJdbcTemplate();
}

Answer 5

Alt+Shift+Up Arrow does escalating selection. Alt+Shift+Down does the opposite.

Answer 6

CTRL + D - to delete current line