A simple Properties extension easing the loading and saving of data : Preference Properties « Development Class « Java

A simple Properties extension easing the loading and saving of data


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 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
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//package org.apache.ivy.util;

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

 * A simple Properties extension easing the loading and saving of data
public class PropertiesFile extends Properties {
  private File file;

  private String header;

  public PropertiesFile(File file, String header) {
    this.file = file;
    this.header = header;
    if (file.exists()) {
      FileInputStream fis = null;
      try {
        fis = new FileInputStream(file);
      } catch (Exception ex) {
        // Message.warn("exception occured while reading properties file "
        // + file + ": "
        // + ex.getMessage());
      try {
        if (fis != null) {
      } catch (IOException e) {
        // ignored

  public void save() {
    FileOutputStream fos = null;
    try {
      if (file.getParentFile() != null && !file.getParentFile().exists()) {
      fos = new FileOutputStream(file);
      store(fos, header);
    } catch (Exception ex) {
      // Message.warn("exception occured while writing properties file " +
      // file + ": "
      // + ex.getMessage());
    try {
      if (fos != null) {
    } catch (IOException e) {
      // ignored



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