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The Java properties file

The Properties file

The Java properties files are normal text files that serve as a simple configuration tool. These files can be saved under any name. The file extension is. Properties.

example

# comment
to the file! Also comment

port number 3128
hostname = host such
language: de

long text This text \\
is longer than one line

There are 3 ways to keys, values and normal values entered.

• with blanks, the amount of space does not matter. As in the example above, the key "port number" and the value "3128".
• with equal sign, the number of spaces is immaterial. Just as in the example above, "hostname" and "such host"
• with a colon, here too the number of spaces does not matter

plays the text on the next line to continue, you can create a line break with the following symbol : \\

call in Java code

The following code retrieves the Properties File "beispiel.properties" on. After that, from this file, the value "hostname" is read.

property String file = "beispiel.properties";

Properties prop = new Properties ();

try {

prop.load (new FileInputStream (property file));
/ / Properties File Load

} catch (IOException e)

{/ / If the load failed
}

prop.getProperty String = hostname ("hostname");

Wikipedia - Java properties file