A JVM Properties Viewer

This is mostly a bare-bones version of a basic Swing application that was created using Eclipse's visual editor. In it there is a single method to present the contents of the JVM properties into a text area.

See the method loadJVMData().

The whole application has been listed here so that you can cut-n-paste into your own editor and run it.

/*
 * Modification History
 *
 * Date     Project     Pgmr    Description
 * -------- ---------   ----    ---------------------------------------------------
 * 02242004 Utilities   BF      Initial release
 * 10072005 Utilities   BF      Refactored to use 
 *                              Properties properties = System.getProperties();
 *                              to get entire list of properties.
 *                              
 *                               
 *                               
 */
package com.utilities.ui;

import java.net.InetAddress;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Properties;
import java.util.Set;
import java.util.Vector;

import javax.swing.JDialog;
import javax.swing.JFrame;

import com.utilities.general.StringRoutines;

/**
 * @author  
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class JVMProperties extends JDialog {

 private javax.swing.JPanel jContentPane = null;

 private javax.swing.JPanel jPanel = null;
 private javax.swing.JPanel jPanel1 = null;
 private javax.swing.JPanel jPanel2 = null;
 private javax.swing.JLabel jLabel = null;
 private javax.swing.JButton jButton = null;
 private javax.swing.JList jList = null;

 private javax.swing.JScrollPane jScrollPane = null;
 //private static JVMProperties jvmProps = null;

 /**
  * This is the most-always empty Main()
  */
 public static void main(String[] args) {
        JVMProperties jvmp = new JVMProperties(null,true);
        jvmp.show();
        System.exit(0);
 }


 /**
  * This is the default constructor.  It calls the process to perform
  */
 public JVMProperties(JFrame parent, boolean modal) {

  super(parent, modal);
  initialize();
        if (parent != null) {
            this.setLocationRelativeTo(parent.getContentPane());
        } else {
            this.setLocationRelativeTo(null);
        }
        
  this.process();
 }


 /**
  * This is the processor-controller
  */
 public void process() {

  this.loadJVMData();

 }


 /**
  * This method was created in VisualAge.
  */
 public void  loadJVMData() {

  String CR = System.getProperty("line.separator");
  Vector vector = new Vector();

        //Get the internet address of the machine in which this is running
     try {
      InetAddress inetAddr = InetAddress.getLocalHost();
            
            String key = "Internet host name / address";
            String nameAddr = inetAddr.getHostName() + "/" + inetAddr.getHostAddress();
            int n = 30 - key.length();
            if (n <= 0) n = 1;
            String rightPad = StringRoutines.padStringLeft(">", n);
            
         vector.add(key + rightPad + nameAddr);
     } catch (Exception e) {
        }

        //Now get the rest of the proerties and add them to the list
     Properties properties = System.getProperties();
        Set set = properties.keySet();
        Iterator setIter = set.iterator();
        while(setIter.hasNext()) {
            String key = (String)setIter.next();
            String value = properties.getProperty(key);
            
            int n = 30 - key.length();
            if (n <= 0) n = 1;
            String rightPad = StringRoutines.padStringLeft(">", n);
            //System.out.println(key + rightEdge + value);
            vector.add(key + rightPad + value);
        }

  //vector.add("java.naming.factory.initial>"+System.getProperty("java.naming.factory.initial"));
  jList.setListData(vector);
  //AppLog.debug(vector);

 }

 /**
  * This method initializes this
  *
  * @return void
  */
 private void initialize() {
  this.setSize(604, 372);
  this.setContentPane(getJContentPane());
  this.setLocation(100, 200);
  this.setTitle("Java Virtual Machine Properties Viewer");
 }
 /**
  * This method initializes jContentPane
  *
  * @return javax.swing.JPanel
  */
 private javax.swing.JPanel getJContentPane() {
  if (jContentPane == null) {
   jContentPane = new javax.swing.JPanel();
   java.awt.GridBagConstraints consGridBagConstraints11 = new java.awt.GridBagConstraints();
   java.awt.GridBagConstraints consGridBagConstraints10 = new java.awt.GridBagConstraints();
   java.awt.GridBagConstraints consGridBagConstraints12 = new java.awt.GridBagConstraints();
   consGridBagConstraints11.fill = java.awt.GridBagConstraints.BOTH;
   consGridBagConstraints11.weighty = 200.0D;
   consGridBagConstraints11.weightx = 1.0;
   consGridBagConstraints11.gridx = 0;
   consGridBagConstraints11.gridy = 1;
   consGridBagConstraints10.fill = java.awt.GridBagConstraints.BOTH;
   consGridBagConstraints10.weighty = 1.0;
   consGridBagConstraints10.weightx = 1.0;
   consGridBagConstraints10.gridy = 0;
   consGridBagConstraints10.gridx = 0;
   consGridBagConstraints12.fill = java.awt.GridBagConstraints.BOTH;
   consGridBagConstraints12.weighty = 1.0;
   consGridBagConstraints12.weightx = 1.0;
   consGridBagConstraints12.gridx = 0;
   consGridBagConstraints12.gridy = 2;
   jContentPane.setLayout(new java.awt.GridBagLayout());
   jContentPane.add(getJPanel(), consGridBagConstraints10);
   jContentPane.add(getJPanel1(), consGridBagConstraints11);
   jContentPane.add(getJPanel2(), consGridBagConstraints12);
  }
  return jContentPane;
 }
 /**
  * This method initializes jPanel
  *
  * @return javax.swing.JPanel
  */
 private javax.swing.JPanel getJPanel() {
  if(jPanel == null) {
   jPanel = new javax.swing.JPanel();
   java.awt.FlowLayout layFlowLayout13 = new java.awt.FlowLayout();
   layFlowLayout13.setAlignment(java.awt.FlowLayout.LEFT);
   jPanel.setLayout(layFlowLayout13);
   jPanel.add(getJLabel(), null);
  }
  return jPanel;
 }
 /**
  * This method initializes jPanel1
  *
  * @return javax.swing.JPanel
  */
 private javax.swing.JPanel getJPanel1() {
  if(jPanel1 == null) {
   jPanel1 = new javax.swing.JPanel();
   jPanel1.setLayout(new java.awt.BorderLayout());
   jPanel1.add(getJScrollPane(), java.awt.BorderLayout.CENTER);
   jPanel1.setPreferredSize(new java.awt.Dimension(200,200));
  }
  return jPanel1;
 }
 /**
  * This method initializes jPanel2
  *
  * @return javax.swing.JPanel
  */
 private javax.swing.JPanel getJPanel2() {
  if(jPanel2 == null) {
   jPanel2 = new javax.swing.JPanel();
   java.awt.FlowLayout layFlowLayout14 = new java.awt.FlowLayout();
   layFlowLayout14.setAlignment(java.awt.FlowLayout.RIGHT);
   jPanel2.setLayout(layFlowLayout14);
   jPanel2.add(getJButton(), null);
  }
  return jPanel2;
 }
 /**
  * This method initializes jLabel
  *
  * @return javax.swing.JLabel
  */
 private javax.swing.JLabel getJLabel() {
  if(jLabel == null) {
   jLabel = new javax.swing.JLabel();
   jLabel.setText("JVM Properties");
  }
  return jLabel;
 }
 /**
  * This method initializes jButton
  *
  * @return javax.swing.JButton
  */
 private javax.swing.JButton getJButton() {
  if(jButton == null) {
   jButton = new javax.swing.JButton();
   jButton.setText("Close");
   jButton.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(java.awt.event.ActionEvent e) {
     hide();
    }
   });
  }
  return jButton;
 }
 /**
  * This method initializes jList
  *
  * @return javax.swing.JList
  */
 private javax.swing.JList getJList() {
  if(jList == null) {
   jList = new javax.swing.JList();
   jList.setSelectionMode(javax.swing.ListSelectionModel.SINGLE_SELECTION);
   jList.setPreferredSize(new java.awt.Dimension(800,800));
   jList.setVisibleRowCount(5);
   jList.setFont(new java.awt.Font("Courier New", java.awt.Font.PLAIN, 12));
  }
  return jList;
 }
 /**
  * This method initializes jScrollPane
  *
  * @return javax.swing.JScrollPane
  */
 private javax.swing.JScrollPane getJScrollPane() {
  if(jScrollPane == null) {
   jScrollPane = new javax.swing.JScrollPane();
   jScrollPane.setViewportView(getJList());
   jScrollPane.setPreferredSize(new java.awt.Dimension(274,300));
  }
  return jScrollPane;
 }
}  //  @jve:visual-info  decl-index=0 visual-constraint="10,10"