how to search for string in file

Question

How could I search for string in text file in java? Would it have to be in a text file or could it read a .ini or some other file type example

sound = off
opengl = on
openal = off

I tried searching for it on google but I couldnt really find anything. Thanks in advance

You can process any file as if it contains text (.ini files happen to actually contain text). Possible duplicate of [Finding line number of a word in a text file using java](http://stackoverflow.com/questions/7548519/finding-line-number-of-a-word-in-a-text-file-using-java) — Ted Hopp, Sep 25 '11 at 21:06

score 4 · Answer 1 · answered Sep 25 '11 at 21:08

4

It looks like you want to use a Properties file.

You can load one using Properties.load(String path);

answered Sep 25 '11 at 21:08

Sky Kelsey

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score 2 · Answer 2 · answered Sep 25 '11 at 21:10

2

If your file is a properties file or an ini file (key = value), you may want to use the Apache Commons Configuration API. It is much better than the Properties class from the JDK.

answered Sep 25 '11 at 21:10

Jean Logeart

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score 1 · Accepted Answer · answered Sep 25 '11 at 21:18

There are tons of information with those typical of questions.

Here you have two easy examples:

Loading Java Properties Files http://viralpatel.net/blogs/2009/10/loading-java-properties-files.html
How do I load property settings with the Properties class? http://www.jguru.com/faq/view.jsp?EID=581608

In short it is easy to load a file into a Properties object, for example to obtain, in your case, the sound value in a example.properties file:

Properties props = new Properties();
props.load(new FileInputStream("example.properties"));
String isOnOrOff = props.getProperty("sound");

how to search for string in file

3 Answers3