Java.util.Properties.load() Method
Description
The java.util.Properties.load(InputStream inStream) method reads a property list (key and element pairs) from the input byte stream. The input stream is in a simple line-oriented format as specified in load(Reader) and is assumed to use the ISO 8859-1 character encoding; that is each byte is one Latin1 character.
Declaration
Following is the declaration for java.util.Properties.load() method
public void load(InputStream inStream)
Parameters
inStream − the input stream.
Return Value
This method does not return a value.
Exception
IOException − if an error occurred when reading from the input stream.
IllegalArgumentException − if the input stream contains a malformed Unicode escape sequence.
Example
The following example shows the usage of java.util.Properties.list() method.
Live Demopackage com.tutorialspoint; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.*; public class PropertiesDemo { public static void main(String[] args) { Properties prop = new Properties(); String s = "Height=200"; String s2 = "Width=15"; try { // create a new input and output stream FileOutputStream fos = new FileOutputStream("properties.txt"); FileInputStream fis = new FileInputStream("properties.txt"); // write the first property in the output stream file fos.write(s.getBytes()); // change the line between the two properties fos.write("\n".getBytes()); // write next property fos.write(s2.getBytes()); // load from input stream prop.load(fis); // print the properties list from System.out prop.list(System.out); } catch (IOException ex) { ex.printStackTrace(); } } }
Let us compile and run the above program, this will produce the following result −
-- listing properties -- Width=15 Height=200