001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.util;
019
020import org.apache.yetus.audience.InterfaceAudience;
021
022/**
023 * A generic way for querying Java properties.
024 */
025@InterfaceAudience.Private
026public final class GetJavaProperty {
027  public static void main(String args[]) {
028    if (args.length == 0) {
029      for (Object prop : System.getProperties().keySet()) {
030        System.out.println(prop + "=" + System.getProperty((String) prop, ""));
031      }
032    } else {
033      for (String prop : args) {
034        System.out.println(System.getProperty(prop, ""));
035      }
036    }
037  }
038
039  private GetJavaProperty() {
040  }
041}