1 /* 2 * Copyright (c) 2002, 2004, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.ui; 26 27 import java.awt.*; 28 import java.util.*; 29 import javax.swing.*; 30 31 import sun.jvm.hotspot.runtime.*; 32 33 /** Shows values of Java System properties. */ 34 35 public class SysPropsPanel extends JPanel { 36 private SAEditorPane flagsPane; 37 SysPropsPanel()38 public SysPropsPanel() { 39 initUI(); 40 } 41 initUI()42 private void initUI() { 43 setLayout(new BorderLayout()); 44 flagsPane = new SAEditorPane(); 45 flagsPane.setText(getFlags()); 46 47 add(new JScrollPane(flagsPane), BorderLayout.CENTER); 48 } 49 getFlags()50 private String getFlags() { 51 final StringBuffer buf = new StringBuffer(); 52 buf.append("<html><head><title>System Properties</title></head><body>"); 53 buf.append("<table border='1'>"); 54 55 Properties sysProps = VM.getVM().getSystemProperties(); 56 if (sysProps != null) { 57 Enumeration keys = sysProps.keys(); 58 while (keys.hasMoreElements()) { 59 Object key = keys.nextElement(); 60 buf.append("<tr><td>"); 61 buf.append(key.toString()); 62 buf.append("</td><td>"); 63 buf.append(sysProps.get(key).toString()); 64 buf.append("</td></tr>"); 65 } 66 } else { 67 buf.append("<tr><td>System Properties info not available!</td></tr>"); 68 } 69 buf.append("</table>"); 70 buf.append("</body></html>"); 71 return buf.toString(); 72 } 73 } 74