Read,Write and Update the Properities file using Java

Write into properities file

public static void WriteToProperity(String key, String value,

                  String path) {

            Properties prop = new Properties();

            // FileInputStream inStream = new FileInputStream(path);

            FileOutputStream outStream = null;

            try {

                  outStream = new FileOutputStream(path, true);

                  // Update the environment varaible

                  prop.setProperty(key,value

                  prop.store(outStream, "Path Properity Files");

                  outStream.close();

            } catch (Exception e) {

                  // TODO: handle exception

                  try {

                        outStream.close();

                  } catch (IOException e1) {

                        // TODO Auto-generated catch block

                        e1.printStackTrace();

                  }

                  e.printStackTrace();

            }

      }

//Delete key from properties files

      public static void deleteKeyVariable(String key,String value,

                  String path) {

            FileOutputStream outStream = null;

            try {

                  Properties prop = new Properties();

                  // FileInputStream inStream = new FileInputStream(path);

                  FileInputStream inStream = new FileInputStream(path);

                  prop.load(inStream);

                  // Remove the key

                  prop.remove(key);

                  outStream = new FileOutputStream(path);

                  // prop.setProperty(environClass.getKey(), environClass.getValue());

                  prop.store(outStream, "Delete the Properity Files");

                  outStream.close();

            } catch (Exception e) {

                  // TODO: handle exception

                  try {

                        outStream.close();

                  } catch (IOException e1) {

                        // TODO Auto-generated catch block

                        e1.printStackTrace();

                  }

                  e.printStackTrace();

            }

      }

//Read the values from properties  files

public static List<EnvironmentClass> getEnviromentVaribale(

                  String properityPath) throws InstallerException {

            List<EnvironmentClass> environmentList = new ArrayList<EnvironmentClass>();

            Properties prop = new Properties();

            EnvironmentClass environment;

            String propKey = null;

            String propValue = null;

            try {

                  FileInputStream inStream = new FileInputStream(properityPath);

                  // load the form

                  prop.load(inStream);

                  Enumeration<Object> keys = prop.keys();

                   while (keys.hasMoreElements()) {

                        // Get the key

                        propKey = (String) keys.nextElement();

                        // Get the key values

                        propValue = prop.getProperty(propKey);

                        // Put into the List;

                        System.out

                                    .println("Key =" + propKey + "  Values: " + propValue);

                        environment = new EnvironmentClass(propKey, propValue);

                        environmentList.add(environment);

                  }

                  return environmentList;

            } catch (IOException e) {

                  // TODO Auto-generated catch block

                  throw new InstallerException(e);

            }

      }