CODEWITHSUNDEEP
javaregexbashshellsed
JoJo
JoJo

Reputation: 1447

How to use sed command to change java package declaration in batch way

Previously, my java package declarations all start with 'zn' like "package zn.tree". Now after I changed the java folder path to remove 'zn' folder, I also want to change all java declarations to remove the prefix 'zn.' in a batch way. For example, I want change "package zn.tree" to "package tree".

So I decided to use bash script to change all the java files. After I googled, I wrote a script to use 'sed' command to do this job. However, it doesn't work and reports error. I still don't get familiar with the regex in 'sed'. My code is shown below:

#! /bin/bash
# change package declaration in batch way
for path in $(find $1 -type f -name "*.java"); do
        sed -i "" 's/\<zn/.\>//g' $path
done

Hope someone could give me some clues. Thank you.

Upvotes: 3

Views: 1970

Answers (2)

David
David

Reputation: 5519

Using the refactoring feature of an IDE such as Eclipse, IntelliJ or Netbeans will save you a lot of time for those needs. In IntelliJ, you would just create your new package and drag-and-drop your classes from the old package to the new one.

Upvotes: 0

Elliott Frisch
Elliott Frisch

Reputation: 201487

If I understand your question, you could do it with a one liner like,

find . -type f -name '*.java' -exec sed -i 's/^package zn\./package /1' {} \;

That will execute the sed command and instruct it to edit in-place on every matching file. Note that I assume you want to match the first line starting with "package zn." and replace it with "package " once.

Upvotes: 4

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