java.lang.Object
- org.springframework.boot.loader.tools.Repackager

```
public class Repackager
extends Object
```
Utility class that can be used to repackage an archive so that it can be executed using 'java -jar'.

Nested Class Summary
Nested Classes
Modifier and Type Class Description
static interface Repackager.MainClassTimeoutWarningListener
Callback interface used to present a warning when finding the main class takes too long.

Constructor Summary
Constructors
Constructor Description
Repackager(File source)
Repackager(File source, LayoutFactory layoutFactory)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addMainClassTimeoutWarningListener(Repackager.MainClassTimeoutWarningListener listener)`	Add a listener that will be triggered to display a warning if searching for the main class takes too long.
`protected String`	`findMainMethod(JarFile source)`
`File`	`getBackupFile()`	Return the `File` to use to backup the original source.
`void`	`repackage(File destination, Libraries libraries)`	Repackage to the given destination so that it can be launched using ' java -jar'.
`void`	`repackage(File destination, Libraries libraries, LaunchScript launchScript)`	Repackage to the given destination so that it can be launched using ' java -jar'.
`void`	`repackage(Libraries libraries)`	Repackage the source file so that it can be run using 'java -jar'.
`void`	`setBackupSource(boolean backupSource)`	Sets if source files should be backed up when they would be overwritten.
`void`	`setLayout(Layout layout)`	Sets the layout to use for the jar.
`void`	`setLayoutFactory(LayoutFactory layoutFactory)`	Sets the layout factory for the jar.
`void`	`setMainClass(String mainClass)`	Sets the main class that should be run.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Repackager
```
public Repackager(File source)
```
  - Repackager
```
public Repackager(File source,
                  LayoutFactory layoutFactory)
```
- Method Detail
  - addMainClassTimeoutWarningListener
```
public void addMainClassTimeoutWarningListener(Repackager.MainClassTimeoutWarningListener listener)
```
    Add a listener that will be triggered to display a warning if searching for the main class takes too long.
    Parameters:
    listener - the listener to add
  - setMainClass
```
public void setMainClass(String mainClass)
```
    Sets the main class that should be run. If not specified the value from the MANIFEST will be used, or if no manifest entry is found the archive will be searched for a suitable class.
    Parameters:
    mainClass - the main class name
  - setBackupSource
```
public void setBackupSource(boolean backupSource)
```
    Sets if source files should be backed up when they would be overwritten.
    Parameters:
    backupSource - if source files should be backed up
  - setLayout
```
public void setLayout(Layout layout)
```
    Sets the layout to use for the jar. Defaults to Layouts.forFile(File).
    Parameters:
    layout - the layout
  - setLayoutFactory
```
public void setLayoutFactory(LayoutFactory layoutFactory)
```
    Sets the layout factory for the jar. The factory can be used when no specific layout is specified.
    Parameters:
    layoutFactory - the layout factory to set
  - repackage
```
public void repackage(Libraries libraries)
               throws IOException
```
    Repackage the source file so that it can be run using 'java -jar'.
    Parameters:
    libraries - the libraries required to run the archive
    Throws:
    IOException - if the file cannot be repackaged
  - repackage
```
public void repackage(File destination,
                      Libraries libraries)
               throws IOException
```
    Repackage to the given destination so that it can be launched using ' java -jar'.
    Parameters:
    destination - the destination file (may be the same as the source)
    libraries - the libraries required to run the archive
    Throws:
    IOException - if the file cannot be repackaged
  - repackage
```
public void repackage(File destination,
                      Libraries libraries,
                      LaunchScript launchScript)
               throws IOException
```
    Repackage to the given destination so that it can be launched using ' java -jar'.
    Parameters:
    destination - the destination file (may be the same as the source)
    libraries - the libraries required to run the archive
    launchScript - an optional launch script prepended to the front of the jar
    Throws:
    IOException - if the file cannot be repackaged
    Since:
    1.3.0
  - getBackupFile
```
public final File getBackupFile()
```
    Return the File to use to backup the original source.
    Returns:
    the file to use to backup the original source
  - findMainMethod
```
protected String findMainMethod(JarFile source)
                         throws IOException
```
    Throws:
    IOException

Constructor	Description
`Repackager(File source)`
`Repackager(File source, LayoutFactory layoutFactory)`

Class Repackager

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Repackager

Repackager

Method Detail

addMainClassTimeoutWarningListener

setMainClass

setBackupSource

setLayout

setLayoutFactory

repackage

repackage

repackage

getBackupFile

findMainMethod