Reading and Writing a Properties File

     

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;

public class Main {
  public static void main(String[] argv) throws Exception {

    // Read properties file.
    Properties properties = new Properties();
    try {
      properties.load(new FileInputStream("filename.properties"));
    } catch (IOException e) {
    }

    // Write properties file.
    try {
      properties.store(new FileOutputStream("filename.properties"), null);
    } catch (IOException e) {
    }
  }
}

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Reading and Writing a Properties File : Preference Properties « Development Class « Java

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