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"
