public void testPreferenceChange() {
try {
Preferences userRoot = Preferences.userRoot();
Preferences node = userRoot.node("testAdd");
node.addPreferenceChangeListener(
new PreferenceChangeListener() {
public void preferenceChange(PreferenceChangeEvent evt) {
System.out.println(
" node "
+ evt.getNode().name()
+ " key = <"
+ evt.getKey()
+ "> val= <"
+ evt.getNewValue()
+ ">");
if (evt.getKey().equals("love"))
assert evt.getNewValue().equals("ok") : evt.getNewValue();
else if (evt.getKey().equals("love2"))
assert evt.getNewValue().equals("not ok") : evt.getNewValue();
}
});
node.put("love", "ok");
node.put("love2", "not ok");
} catch (Exception e) {
System.out.println(e);
e.printStackTrace();
}
}
public void testNodeChange() {
System.out.println("***TestEvent");
try {
Preferences userRoot = Preferences.userRoot();
userRoot.addNodeChangeListener(
new NodeChangeListener() {
public void childAdded(NodeChangeEvent evt) {
System.out.println(
"childAdded = " + evt.getParent().name() + " " + evt.getChild().name());
}
public void childRemoved(NodeChangeEvent evt) {
System.out.println(
"childRemoved = " + evt.getParent().name() + " " + evt.getChild().name());
}
});
Preferences node = userRoot.node("testAdd");
node.removeNode();
} catch (Exception e) {
System.out.println(e);
e.printStackTrace();
}
}
public static void main(String[] args) throws Exception {
String osName = System.getProperty("os.name");
if (osName.startsWith("Windows")) return;
Preferences root = Preferences.userRoot();
Preferences node1 = root.node("node1");
Preferences node1A = node1.node("node1A");
Preferences node1B = node1.node("node1B");
node1B.put("mykey", "myvalue");
node1.flush();
String node1BDirName = System.getProperty("user.home") + "/.java/.userPrefs" + "/node1/node1B";
File node1BDir = new File(node1BDirName);
node1BDir.setReadOnly();
try {
node1.removeNode();
} catch (BackingStoreException ex) {
// expected exception
} finally {
Runtime.getRuntime().exec("chmod 755 " + node1BDirName).waitFor();
try {
node1.removeNode();
} catch (Exception e) {
}
}
}