de.caff.util

Class VersionChecker

java.lang.Object

de.caff.util.VersionChecker

All Implemented Interfaces:

KnockOffListener

public class VersionChecker
extends java.lang.Object
implements KnockOffListener

Check whether a new program version is available.

If a newer one is available the new jar can be downloaded and saved in a way that the old jar is replaced. Possibly the program can also be restarted using the new jar.

Author:

Rammi

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	VersionChecker.ProgramAccess Program information necessary for automatic update.
static class	VersionChecker.Version Helper class for a simple version build from numbers separated by points.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	TAG_COMMENT
static java.lang.String	TAG_MINJVM
static java.lang.String	TAG_NOUPDATE
static java.lang.String	TAG_SEPARATOR
static java.lang.String	TAG_VERSION

Method Summary

Modifier and Type	Method and Description
static void	checkForNewVersion(VersionChecker.ProgramAccess pa) Check whether a new version is available.
void	knockedOff(Worker worker) Invoked when the worker has finished.
static boolean	writeStreamToFile(java.io.InputStream is, java.io.File target) Write the complete content of a stream to a file.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

TAG_SEPARATOR

public static final java.lang.String TAG_SEPARATOR

See Also:

Constant Field Values

TAG_COMMENT

public static final java.lang.String TAG_COMMENT

See Also:

Constant Field Values

TAG_VERSION

public static final java.lang.String TAG_VERSION

See Also:

Constant Field Values

TAG_MINJVM

public static final java.lang.String TAG_MINJVM

See Also:

Constant Field Values

TAG_NOUPDATE

public static final java.lang.String TAG_NOUPDATE

See Also:

Constant Field Values

Method Detail

knockedOff

public void knockedOff(@NotNull
                       Worker worker)

Invoked when the worker has finished.

Specified by:

knockedOff in interface KnockOffListener

Parameters:

worker - worker which finished

writeStreamToFile

public static boolean writeStreamToFile(@NotNull
                                        java.io.InputStream is,
                                        @NotNull
                                        java.io.File target)
                                 throws java.io.IOException

Write the complete content of a stream to a file.

Parameters:

is - input stream

target - target

Returns:

true if anything was written
false: if nothing was written

Throws:

java.io.IOException - on read and write errors

checkForNewVersion

public static void checkForNewVersion(@NotNull
                                      VersionChecker.ProgramAccess pa)

Check whether a new version is available.

Parameters:

pa - access to already running program