¡@
java Programming Glossary: mbFastest way to write huge data in text file Java http://stackoverflow.com/questions/1062113/fastest-way-to-write-huge-data-in-text-file-java It takes me in the range of 4 5 seconds to write 175MB 4 million strings this is on a dual core 2.4GHz Dell running.. records.size 'records' System.out.println size MEG MB for int i 0 i ITERATIONS i System.out.println nIteration i writeRaw..
How to discover memory usage of my application in Android http://stackoverflow.com/questions/2298208/how-to-discover-memory-usage-of-my-application-in-android typically on an Android system this would be only a few MB since we try to use available memory to keep processes running.. and other such things. Typical systems will need to have 20MB or so for this to avoid getting into bad paging states the Android..
What are good docking frameworks for Java/Swing? [closed] http://stackoverflow.com/questions/304874/what-are-good-docking-frameworks-for-java-swing 10 docking frameworks here . Raven Docking Apache 2 0.2 MB MyDoggy LGPL only JARs 0.7 MB Dec 2010 VLDocking LGPL 0.4 MB.. . Raven Docking Apache 2 0.2 MB MyDoggy LGPL only JARs 0.7 MB Dec 2010 VLDocking LGPL 0.4 MB NetBeans CDDL GPL 4.6 MB platform.zip.. MyDoggy LGPL only JARs 0.7 MB Dec 2010 VLDocking LGPL 0.4 MB NetBeans CDDL GPL 4.6 MB platform.zip Eclipse CPL or EPL only..
Best XML parser for Java [closed] http://stackoverflow.com/questions/373833/best-xml-parser-for-java XML parser for Java closed I need to read smallish few MB at the most UTF 8 encoded XML files rummage around looking at..
How to convert byte size into human readable format in java? http://stackoverflow.com/questions/3758606/how-to-convert-byte-size-into-human-readable-format-in-java 1728 1.7 kB 1.7 KiB 110592 110.6 kB 108.0 KiB 7077888 7.1 MB 6.8 MiB 452984832 453.0 MB 432.0 MiB 28991029248 29.0 GB 27.0.. 110.6 kB 108.0 KiB 7077888 7.1 MB 6.8 MiB 452984832 453.0 MB 432.0 MiB 28991029248 29.0 GB 27.0 GiB 1855425871872 1.9 TB..
What does Java option -Xmx stand for? http://stackoverflow.com/questions/5374455/what-does-java-option-xmx-stand-for pool. This value must a multiple of 1024 greater than 2MB. Append the letter k or K to indicate kilobytes or m or M to.. or m or M to indicate megabytes. The default value is 64MB. The upper limit for this value will be approximately 4000m.. in simple words you are saying Java to use Maximum of 1024 MB from available memory. Notice there is NO SPACE between Xmx..
Virtual Memory Usage from Java under Linux, too much memory used http://stackoverflow.com/questions/561245/virtual-memory-usage-from-java-under-linux-too-much-memory-used heap size 64mb I see using the tops application that 240 MB of virtual Memory are allocated to the application. This creates.. I set a Heap of 128M for example still linux allocates 210 MB of Virtual Memory which is not needed ever. Edit 2 Using ulimit.. the amount of virtual memory. If the size set is below 204 MB then the application won't run even though it doesn't need 204MB..
How to find files that match a wildcard string in Java? http://stackoverflow.com/questions/794381/how-to-find-files-that-match-a-wildcard-string-in-java
Max amount of memory per java process in windows? http://stackoverflow.com/questions/987219/max-amount-of-memory-per-java-process-in-windows JVM optimizations I've actively allocate X number of 10MB objects. I run a number of test on a number of JVMs increasing.. the XMX value together with increasing the number of MB allocated on a different 32bit operating systems using both.. OS Windows XP SP2 JVM Sun 1.6.0_02 Max heap size 1470 MB OS Windows XP SP2 JVM IBM 1.5 Max heap size 1810 MB OS Windows..
Fastest way to write huge data in text file Java http://stackoverflow.com/questions/1062113/fastest-way-to-write-huge-data-in-text-file-java to write the data and it took around 40 secs to write 174 mb of data. Is this the fastest speed java can offer bufferedWriter.. and fetching the records from resultset as well. . 174 mb is for 400000 rows in resultset. java file resultset share..
Java not garbage collecting memory http://stackoverflow.com/questions/10951812/java-not-garbage-collecting-memory I created an SSCCE to demonstrate this. It reads in a 1 mb 2 mb in Java due to 16 bit encoding file and extracts one character.. created an SSCCE to demonstrate this. It reads in a 1 mb 2 mb in Java due to 16 bit encoding file and extracts one character.. should be about 8 kb . At the end of the test the full 2 mb is still used The initial memory usage Allocated 93847.55 kb..
Incorrect behavior of JPanel#paintChildren(Graphics) when a JMenu is present? http://stackoverflow.com/questions/11922771/incorrect-behavior-of-jpanelpaintchildrengraphics-when-a-jmenu-is-present frame JFrame f new JFrame set up a simple menu JMenuBar mb new JMenuBar JMenu m new JMenu Test JMenuItem mi new JMenu.. new JMenu Test JMenuItem mi new JMenu Whatever m.add mi mb.add m f.setJMenuBar mb a panel with a simple text overlay.. mi new JMenu Whatever m.add mi mb.add m f.setJMenuBar mb a panel with a simple text overlay over components. works..
Event detection on opaque pixels in JButton http://stackoverflow.com/questions/13825123/event-detection-on-opaque-pixels-in-jbutton MouseEvent me super.mouseClicked me MyButton mb MyButton me.getSource if isAlpha mb.getIconImage me.getX me.getY.. me MyButton mb MyButton me.getSource if isAlpha mb.getIconImage me.getX me.getY JOptionPane.showMessageDialog..
How to configure JComboBox not to select FIRST element when created? http://stackoverflow.com/questions/2762818/how-to-configure-jcombobox-not-to-select-first-element-when-created to configure JComboBox not to select FIRST element when created Problem Update.. created Problem Update From the Java SE 6 API public JComboBox Creates a JComboBox with a default data model. The default.. From the Java SE 6 API public JComboBox Creates a JComboBox with a default data model. The default data model is an..
Where I can find a detailed comparison of Java XML frameworks? http://stackoverflow.com/questions/3855324/where-i-can-find-a-detailed-comparison-of-java-xml-frameworks documents typically used for XML documents less than 10 mb slower generic model i.e. you work with Nodes Stax Pros Best.. Stax Cons no schema validation support as far as I remember not sure if they have added it now can only go forward like..
Relationship between JMS connections, sessions, and producers/consumers http://stackoverflow.com/questions/4741713/relationship-between-jms-connections-sessions-and-producers-consumers messages. Inside of a transaction the same window of ambiguity exists but it is on the COMMIT call rather then the PUT.. not to lose one. The JMS spec recognizes this window of ambiguity and provides the following guidance If a failure occurs.. if the transaction was committed or rolled back. The same ambiguity exists when a failure occurs between the non transactional..
Quickest way to read text-file line by line in Java http://stackoverflow.com/questions/5800361/quickest-way-to-read-text-file-line-by-line-in-java file FileChannel ch f.getChannel MappedByteBuffer mb ch.map FileChannel.MapMode.READ_ONLY 0L ch.size byte bytes new.. 0L ch.size byte bytes new byte 1024 int i 0 while mb.hasRemaining byte get mb.get if get ' n' if ra.run new String.. new byte 1024 int i 0 while mb.hasRemaining byte get mb.get if get ' n' if ra.run new String bytes cnt for int j..
http://stackoverflow.com/questions/5853879/swing-obtain-image-of-jframe JMenu menu new JMenu Other menu.add screenshot JMenuBar mb new JMenuBar mb.add menu f.setJMenuBar mb JPanel p new JPanel.. JMenu Other menu.add screenshot JMenuBar mb new JMenuBar mb.add menu f.setJMenuBar mb JPanel p new JPanel new BorderLayout.. JMenuBar mb new JMenuBar mb.add menu f.setJMenuBar mb JPanel p new JPanel new BorderLayout 5 5 p.setBorder new TitledBorder..
Could not reserve enough space for object heap to start JVM http://stackoverflow.com/questions/6642184/could-not-reserve-enough-space-for-object-heap-to-start-jvm Using top command and free m i can see that i got over 192 mb free so why i still get this error Mem 262144k total 64760k..
Android:“Unexpected end of stream” exception downloading large files http://stackoverflow.com/questions/7402500/androidunexpected-end-of-stream-exception-downloading-large-files return 2 It works right with small files 1 15 mb but it will return a unexpected end of stream exception with..
Error while running Java service wrapper for JBoss AS 7 http://stackoverflow.com/questions/9667224/error-while-running-java-service-wrapper-for-jboss-as-7 Dorg.tanukisoftware.wrapper.WrapperManager.mbean false wrapper.java.additional.7 Dlogging.configuration file.. log rolling. May abbreviate with the 'k' kb or # 'm' mb suffix. For example 10m 10 megabytes. wrapper.logfile.maxsize.. For example 10m 10 megabytes. wrapper.logfile.maxsize 10mb # Maximum number of rolled log files which will be allowed before..
|