In this article, we will discuss how to comment & un-comment lines and block of code in Eclipse IDE
At certain times, we want to try-out new things without deleting existing line of code which is already working. Also, it is required to comment & un-comment block of code consisting 3 or more lines of code.
To make this possible, Eclipse IDE provides easy shortcut keys and its respective actions from Menus
Shortcut commands in Eclipse IDE:
- CTRL + / –> to comment single line of code
- CTRL + / –> the same works to uncomment the same line of code, which is already commented
- CTRL + SHIFT + / –> to comment block of code consisting of 3 or more lines of code
- CTRL + SHIFT + \ –> to uncomment block of code, which is already commented
Let’s understand each one with simple example in Eclipse IDE:
1. To comment single line of code
Step 1: move to the line where we are interested to comment
Press CTRL + / together
Step 2: press CTRL + / simultaneously
Menu: Source Menu –> Toggle Comment
2. To un-comment single line of code
Step 1: move to the line which is already commented
Press CTRL + / together
Step 2: press CTRL + / simultaneously
Menu: Source Menu –> Toggle Comment
Note: if line of code isn’t already commented, then it will comment the code instead of un-commenting
3. To comment block of code (3 or more lines of code)
Step 1: select block of code which we are intended to comment
Press CTRL + SHIFT + / together
Step 2: press CTRL + SHIFT + / simultaneously
Menu: Source Menu –> Add Block Comment
4. To uncomment block of code (3 or more lines of code)
Step 1: select block of code which is already commented
Press CTRL + SHIFT + \ together
Step 2: press CTRL + SHIFT + \ simultaneously
Menu: Source Menu –> Remove Block Comment
Note: if block of code is already commented, then it will uncomment; otherwise, there won’t be any effects pressing 3 keys together
References:
Happy Coding !!
Happy Learning !!