I am having a block of code in Eclipse IDE and I want to replace that with new block of code in the whole project, can any one help me out regarding this issue.
First consider to refactor the repeated code into a function and then you can easily find/replace the function name. It will save you a lot of work.
If its just one line of code, just click ctrl+H select the so it should search in your project, when eclipse finds all results right click on the search window and select "replace all".
If its more than one line of code, enable first regular expression search, so when you select the code and hit ctrl+H eclipse will convert your text to regex, then do the search and select replace all...
(in the search window, make sure to be in the "File Search" tab.)
Related
I tried to select the word that want to replace for multiple times and it did not. Finally I had to close the eclipse and start it.**
Rename (Alt+Shift+R) is a refactoring option. E.g. this could be used to rename a class or a method without renaming classes/methods with the same name but in different packages/classes if it was selected.
To search replace words in Eclipse within a single file, the replace option is there in the Find/Replace dialog that shows when you press Ctrl+F.
To search replace across files, go to Search/Search (Ctrl+H), and look for the File Search tab at the top (you normally need to scroll the tabs to the left to see it). This will let you search across a range of files, and then replace those matches.
Consider a Java while-loop without a body, for example this:
while (map.values().remove(value));
When formatting it (Shift + Alt + F), Eclipse breaks the line before the semicolon and indents it:
while (map.values().remove(value))
;
How can I configure the formatter to not add these line breaks?
Be aware that by setting this semicolon to a new line, you may avoid unintended endless loops and a long search to find them.
However, in Eclipse all code formatting properties are 1) in the project properties and 2) in the Eclipse properties. The project properties inherit from the Eclipse properties.
So if you open the project properties, type "format" in the search field. It will show you a "Formatter" menu item, that may depend on the current language (at least in Java it is called "Formatter"). Then, in this example, allow the project-specific settings, and then click edit. You will see a flood of possible details you can decide.
See here:
Then, in the tab "New Lines", uncheck the checkbox "Put empty statement on new line", in the section "Empty statements".
Often you have to try and search a bit because there are really many options. The part at right shows you a preview of the code formatting.
How to get the SLOC count for the Flex code in Eclipse?
Is there a plug-in similar to "Metrics" for finding information about the Flex porject?
This is the easiest way to count lines of code of any particular language and does not require a plugin.
Steps:
Click on the root folder of your project
Right-click and select Search (or Cntl+H)
In the box "Containing Text" type \n and make sure to select the "Regular Expression" checkbox
In the "File name patterns" input, type the file extensions of the files you want to include in your count, or click on "Choose" if you are feeling lazy.
Click "Search"
BAM! Instant line count for your entire project!
These instructions may differ slightly depending on your version of Eclipse, but you should be able to figure it out.
Good luck!
From this question:
http://metrics.sourceforge.net can do lines. I'm not sure about words
however.
I would like to search multiple files via eclipse for the following 2 lines:
#Length(max = L_255)
private String description;
and replace them with these two:
#Length(max = L_255, message="{validator.description.len}")
private String description;
Another tip on how to get the regex for a selected block.
Open one of the files that contains the multiple lines (multiline) to search or replace.
Click Ctrl+F and select "Regular expression". Close the Find/Replace window.
Select the block you need and click again Ctrl+F to open the Find/Replace window.
Now in the Find text box you have the regular expression that exactly matches your selection block.
(I discovered this, only after creating manually a regexp for very long block :)
Search are multi-line by default in Eclipse when you are using regex:
(\#Length\(max = L_255)\)([\r\n\s]+private)
I would like to add "private String description;"
(\#Length\(max = L_255)\)([\r\n\s]+private\s+?String\s+description\s*?;)
replaced by:
\1, message="{validator.description.len}")\2
It works perfectly in a File Search triggered by a CTRL-H.
As mentioned in Tika's answer, you can directly copy the two lines selected in the "Containing Text" field: those lines will be converted as a regexp for you by Eclipse.
CTRL+H does take two lines if you use regexp (and you don't have to write the regexp by yourself, eclipse does that for you).
Select your lines.
Click CTRL+H. The search dialog opens up.
If "Regular expression" is already checked, eclipse will have converted the two lines you search for into regexp for you, click Search.
If "Regular expression" if not already checked", check it and click Cancel (eclipse remembers your choice).
Select your lines again.
Click CTRL+H. The search dialog opens up. This time "Regular expression" is already selected. eclipse will have converted the two lines you search for into regexp for you, click Search.
A quick tip for including multiple lines as part of a manually constructed regular expression:
Where you would normally use .* to match any character zero or more times, instead consider using something like (?:.|\r?\n)*. Or put an extra ? at the end to make it non-greedy.
Explanation: . doesn't match new lines so need to do an "either-or": The parentheses match either the . before the pipe or the new line after it. The ? after \r makes the carriage return before the line feed optional to allow Windows or Unix new lines. The ?: excludes the whole thing as a capturing group (which helps to avoid a stack overflow).
Click Ctrl + F and select "Regular Expression" and then search the lines. In case to perform the same on multiple files, click Ctrl + H, click on 'File Search' and perform the same.
Select the folder that contains all your files and press Ctrl+H.
Is there an Eclipse command to surround the current selection with parentheses?
Creating a template is a decent workaround; it doesn't work with the "Surround With" functionality, because I want to parenthesize an expression, not an entire line, and that requires ${word_selection} rather than ${line_selection}.
Is there a way that I can bind a keyboard shortcut to this particular template? Ctrl-space Ctrl-space arrow arrow arrow isn't as slick as I'd hoped for.
Maybe not the correct answer, but at least a workaround:
define a Java template with the name "parenthesis" (or "pa") with the following :
(${word_selection})${cursor}
once the word is selected, ctrl-space + p + use the arrow keys to select the template
I used this technique for boxing primary types in JDK 1.4.2 and it saves quite a lot of typing.
Easy, Window->Prefs, then select Java->Editor->Templates
Create a new template with : (${line_selection}${cursor})
The "line_selection" means you have to select more than one line.
You can try creating another one with "word_selection", too.
Then, select text, right click, Surround With... and choose your new template.