read and write properties
java.util.Properties
In a property-file (a normal textfile with the ending „properties“) information in the form
info=Huhu
can be saved.
The reading of a properties-file and the finish reading of an properties works as follows:
Properties props = new Properties(); FileInputStream in = new FileInputStream("c:\\JavaWiki\\MyProperties.properties"); props.load(in); in.close(); String str = props.getProperty("info"); System.out.println(str); // Here an "Huhu" is handed out.
Of course, you can also put properties and safe the property-file again:
props.setProperty("info", "Hello"); // "Huhu" is replaced by "Hello" FileOutputStream out = new FileOutputStream("c:\\JavaWiki\\MyProperties.properties"); props.store(out, null);
After the safing the property-file would look like this:
info=Hello