Handler (Spring Boot API)

java.lang.Object
- java.net.URLStreamHandler
- - org.springframework.boot.loader.jar.Handler

```
public class Handler
extends URLStreamHandler
```
URLStreamHandler for Spring Boot loader JarFiles.
See Also:
JarFile.registerUrlProtocolHandler()

Constructor Summary
Constructors
Constructor Description
Handler()
Handler(JarFile jarFile)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`JarFile`	`getRootJarFileFromUrl(URL url)`
`protected int`	`hashCode(URL u)`
`protected URLConnection`	`openConnection(URL url)`
`protected void`	`parseURL(URL context, String spec, int start, int limit)`
`protected boolean`	`sameFile(URL u1, URL u2)`
`static void`	`setUseFastConnectionExceptions(boolean useFastConnectionExceptions)`	Set if a generic static exception can be thrown when a URL cannot be connected.

Methods inherited from class java.net.URLStreamHandler
equals, getDefaultPort, getHostAddress, hostsEqual, openConnection, setURL, setURL, toExternalForm

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

Constructor Detail

Handler
```
public Handler()
```

Handler
```
public Handler(JarFile jarFile)
```

Method Detail

openConnection

protected URLConnection openConnection(URL url)
                                throws IOException

Specified by:: openConnection in class URLStreamHandler
Throws:: IOException

parseURL

protected void parseURL(URL context,
                        String spec,
                        int start,
                        int limit)

Overrides:: parseURL in class URLStreamHandler

hashCode
```
protected int hashCode(URL u)
```
Overrides:
hashCode in class URLStreamHandler

sameFile

protected boolean sameFile(URL u1,
                           URL u2)

Overrides:: sameFile in class URLStreamHandler

getRootJarFileFromUrl

public JarFile getRootJarFileFromUrl(URL url)
                              throws IOException

Throws:: IOException

setUseFastConnectionExceptions
```
public static void setUseFastConnectionExceptions(boolean useFastConnectionExceptions)
```
Set if a generic static exception can be thrown when a URL cannot be connected. This optimization is used during class loading to save creating lots of exceptions which are then swallowed.
Parameters:
useFastConnectionExceptions - if fast connection exceptions can be used.