如何在文件中搜索字符串

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

Answer 1

It looks like you want to use a Properties file.

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

Answer 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.

Answer 3

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");