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Class java.awt.swing.ProgressMonitorInputStream

java.lang.Object
    |
    +----java.io.InputStream
            |
            +----java.io.FilterInputStream
                    |
                    +----java.awt.swing.ProgressMonitorInputStream

public class ProgressMonitorInputStream
extends FilterInputStream
Monitors the progress of reading from some InputStream. Normally invoked in roughly this form:
 InputStream in = new BufferedInputStream(
            new ProgressMonitorInputStream(
                     parentComponent,
                    "Reading "+fileName,
                     new FileInputStream(fileName)));
 

This creates a progress monitor to monitor the progress of reading the input stream. If it's taking a while, a ProgressDialog will be popped up to inform the user. If the user hits the Cancel button an InterruptedIOException will be thrown on the next read. All the right cleanup is done when the stream is closed.

See Also:
ProgressMonitor, JOptionPane

Fields inherited from class java.io.FilterInputStream
 in
 

Constructor Summary
 ProgressMonitorInputStream(Component parentComponent, Object message, InputStream in)
 
 

Method Summary
void  close()
 
ProgressMonitor  getProgressMonitor()
 
int  read()
 
int  read(byte[] b)
 
int  read(byte[] b, int off, int len)
 
void  reset()
 
long  skip(long n)
 
 
Methods inherited from class java.io.FilterInputStream
 available, close, mark, markSupported, read, read, read, reset, skip
 
Methods inherited from class java.io.InputStream
 available, close, mark, markSupported, read, read, read, reset, skip
 
Methods inherited from class java.lang.Object
 clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ProgressMonitorInputStream

public ProgressMonitorInputStream(Component parentComponent,
                                  Object message,
                                  InputStream in)
Parameters:
message - Descriptive text to be placed in the dialog box if one is popped up.
parentComponent - The component triggering the operation being monitored.
in - The input stream to be monitored.
Method Detail

getProgressMonitor

public ProgressMonitor getProgressMonitor()

read

public int read() throws IOException
Overrides:
read in class FilterInputStream

read

public int read(byte[] b) throws IOException
Overrides:
read in class FilterInputStream

read

public int read(byte[] b,
                int off,
                int len) throws IOException
Overrides:
read in class FilterInputStream

skip

public long skip(long n) throws IOException
Overrides:
skip in class FilterInputStream

close

public void close() throws IOException
Overrides:
close in class FilterInputStream

reset

public void reset() throws IOException
Overrides:
reset in class FilterInputStream

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