How to use Eclipse – Popular hotkey in Eclipse

Eclipse IDE is an open-source product that was originally created with a substantial code donation by IBM to the Java community, and from that moment Eclipse was a community-driven product. It started as an IDE for developing Java programs, but today it’s a development platform used for building thousands of tools and plugins.

Besides being an IDE, Eclipse supports plug-in development, and each developer can add only those plug-ins that you are interested in. For example, there is a plug-in to display UML diagrams, another offers a reporting system, and there are plug-ins for developing applications in C, JavaScript, Apache Flex, and other languages.

DOWNLOADING AND INSTALLING ECLIPSE

There are different versions of Eclipse IDE, and this book uses Eclipse IDE for Java EE Developers. Each version of Eclipse IDE has a name and you could download it from here.

Eclipse manages files in workspace. When the Workbench is launched, the first thing you see is a dialog that allows you to select where the workspace should be located. The workspace is the directory where your work will be stored. For now, just click OK to pick the default location.

After the workspace location is chosen, a single Workbench window is displayed. A Workbench window offers one or more perspectives. A perspective contains editors and views, such as the Project Explorer. Multiple Workbench windows can be opened simultaneously.

To create new project in Eclipse you select File > New menu on the Workbench menu bar. Start by creating a simple project as follows:

  1. From the menu bar, select File > New > Project…

  2. In the New Project wizard, select General > Project then click Next.

  3. In the Project name field, type your name as the name of your new project, for example “JaneQUser”.

  4. Leave the box checked to use the default location for your new project. Click Finish when you are done.

If you sneak a peek at the navigation view, you will see that it now contains the simple project we just created.

Next you type code in Editor and press Ctr+F11 to run program.

Popular hotkey in Eclipse

1. Navigation and text selection

Navigation
Shortcut Description

Ctrl+Shift+R

Search dialog for resources, e.g., text files

Ctrl+Shift+T

Search dialog for Java Types

Ctrl+F8

Shortcut for switching perspectives

Navigation between editors
Shortcut Description

Ctrl+E

Search dialog to select an editor from the currently open editors

Alt+

Go to previous opened editor. Cursor is placed where it was before you opened the next editor

Alt+

Similar Alt + ← but opens the next editor

Ctrl+Q

Go to editor and the position in this editor where the last edit was done

Ctrl+PageUp

Switch to previous opened editor

Ctrl+PageDown

Switch to next opened editor

Navigation between views
Shortcut Description

Ctrl+F7

Shortcut for switching views. Choose the view to switch to with your mouse or cycle through the entries with repeating the keystroke

Shift+Alt+Q

Open menu for switch view keybindings

Shift+Alt+Q+P

Show package explorer

Shift+Alt+Q+C

Show console

2. Start Java programs

Running programs
Shortcut Description

Ctrl+F11

Run last launched

F11

Run last launched in debug mode

Ctrl+Alt+B

Skip all breakpoints. Let’s you use debug mode for code reloading

Alt+Shift+X+J

Run current selected class as Java application

3. Editing in the Java editor

Table Handling the editor
Shortcut Description

Shift+Alt+↑ selects enclosing elements.

Quickfix; result depending on cursor position

Table Handling the editor
Shortcut Description

Ctrl+1

Quickfix; result depending on cursor position

Ctrl+Space

Content assist/ code completion

Ctrl+T

Show the inheritance tree of the current Java class or method.

Ctrl+O

Show all methods of the current class, press Ctrl + O again to show the inherited methods.

Ctrl+M

Maximize active editor or view

Ctrl+Shift+F

Format source code

Ctrl+I

Correct indentation, e.g., format tabs/whitespaces in code

Ctrl+F

Opens the find dialog

Shift+Enter

Adds a link break at the end of the line

Ctrl+Shift+O

Organize the imports; adds missing import statements and removes unused ones

Alt+Shift+Z

Wrap the select block of code into a block, e.g. try/catch.

Cursor navigation and text selection
Shortcut Description

Ctrl+ or Ctrl+

Move one text element in the editor to the left or right

Ctrl+ or Ctrl+

Scroll up / down a line in the editor

Ctrl+Shift+P

Go to the matching bracket

Shift+Cursor movement

Select text from the starting position of the cursor

Alt+Shift ↑ / ↓

Select the previous / next syntactical element

Alt+Shift ↑ / ↓ / ← / →

Extending / reducing the selection of the previous / next syntactical element

Copy and move lines
Shortcut Description

Ctrl+Alt+

Copy current line below the line in which the cursor is placed

Ctrl+Alt+

Copy current line above the line in which the cursor is placed

Alt+Up

Move line one line up

Alt+Down

Move line one line down

 Delete
Shortcut Description

Ctrl+D

Deletes line

Ctrl+Shift+DEL

Delete until end of line

Ctrl+DEL

Delete next element

Ctrl+BACKSPACE

Delete previous element

 Create new lines
Shortcut Description

Shift+Enter

Adds a blank line below the current line and moves the cursor to the new line. The difference between a regular enter is that the currently line is unchanged, independently of the position of the cursor.

Ctrl+Shift+Enter

Same as Shift + Enter but above

Variable assignment
Shortcut Description

Ctrl+2+L

Assign statement to new local variable

Ctrl+2+F

Assign statement to new field

4. Coding

Coding
Shortcut Description

Shift+F2

Show the Javadoc for the selected type / class / method

Alt+Shift+N

Shortcut for the menu to create new objects

Alt+Shift+Z

Surround block with try and catch

5. Refactoring

Refactoring
Shortcut Description

Alt+Shift+R

Rename

Ctrl+2+R

Rename locally (in file), faster than Alt + Shift + R

Alt+Shift+T

Opens the context-sensitive refactoring menu, e.g., displays

6. Minimum

The following shortcuts are the absolute minimum a developer should be familiar with to work efficient in Eclipse.

Must known shortcuts
Shortcut Description

Ctrl+S

Saves current editor

Ctrl+1

Quickfix; shows potential fixes for warnings, errors or shows possible actions

Ctrl+Space

Content assist/ code completion

Ctrl+Q

Goes to the last edited position

Ctrl+D

Deletes current line in the editor

Ctrl+Shift+O

Adjusts the imports statements in the current Java source file

Ctrl+2+L or F

Assign statement to new local variable or field

Ctrl+Shift+T

Open Type Dialog

Ctrl+O

Shows quick outline of a class

Ctrl+F11

Run last launched application

Shift+F10

Opens context menu. Keyboard equivalent to Mouse2

Ctrl+F10

Opens view menu for current view.

Robert Le

I'm a full stack developer. I have experiences with Java, Android, PHP, Python, C#, Web development...I hope website http://learncode24h.com will help everyone can learn code within 24h and apply it in working easily.

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