Java 641 13: The Best Resources and Tutorials for Learning Java Programming

JProfiler is a full-featured JVM profiler that collects all of the data you'd expect from a profiler. It supports live profiling of local and remote sessions, offline profiling and triggers, snapshot comparison, heap dump analysis, automatic request tracking for Kotlin coroutines, Thread starts, java.util.concurrent executors, AWT, and SWT events, and automatic request tracking for Kotlin coroutines.

Java 641 13

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This utility allows the Java application to be more flexible. The user can keep track of the application's heap memory use as well as its non-heap memory utilization. The tool allows developers to learn about java bugs that may be related to the application they created.

The eclipse memory analyzer is the most often used tool for monitoring java-based applications since it aids in-memory analysis. This utility continuously monitors the application's java heap use. When a java application is created, it contains objects, which are then stored in a heap.

All of the java monitoring tools are used to assess the performance and memory utilization of applications written in the Java programming language. There are many distinct sorts of java monitoring tools, each designed to suit a certain purpose.

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 0 at sun.font.ExtendedTextSourceLabel.createCharinfo(Unknown Source) at sun.font.ExtendedTextSourceLabel.getCharinfo(Unknown Source) at sun.font.ExtendedTextSourceLabel.getLineBreakIndex(Unknown Source) at java.awt.font.TextMeasurer.calcLineBreak(Unknown Source) at java.awt.font.TextMeasurer.getLineBreakIndex(Unknown Source) at java.awt.font.LineBreakMeasurer.nextOffset(Unknown Source) at net.sf.jasperreports.engine.fill.SimpleTextLineWrapper.measureExactLineBreakIndex(SimpleTextLineWrapper.java:561) at net.sf.jasperreports.engine.fill.SimpleTextLineWrapper.measureExactLine(SimpleTextLineWrapper.java:535) at net.sf.jasperreports.engine.fill.SimpleTextLineWrapper.nextLine(SimpleTextLineWrapper.java:517) at net.sf.jasperreports.engine.fill.TextMeasurer.renderNextLine(TextMeasurer.java:649) at net.sf.jasperreports.engine.fill.TextMeasurer.renderParagraph(TextMeasurer.java:454) at net.sf.jasperreports.engine.fill.TextMeasurer.measure(TextMeasurer.java:395) at net.sf.jasperreports.engine.fill.JRFillTextElement.chopTextElement(JRFillTextElement.java:541) at net.sf.jasperreports.engine.fill.JRFillTextField.prepare(JRFillTextField.java:641) at net.sf.jasperreports.engine.fill.JRFillElementContainer.prepareElements(JRFillElementContainer.java:331) at net.sf.jasperreports.engine.fill.JRFillBand.fill(JRFillBand.java:379)

at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillBandNoOverflow(JRVerticalFiller.java:458) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillPageHeader(JRVerticalFiller.java:421) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:282) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:151) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:909) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:822) at net.sf.jasperreports.engine.fill.JRFiller.fill(JRFiller.java:61) at net.sf.jasperreports.engine.JasperFillManager.fill(JasperFillManager.java:446) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:849) at ldfc.entity.exhibition.Produkttilmelding_REG.printAllSignedProductsInEGBInKredsCategory(Produkttilmelding_REG.java:648) at ldfc.control.exhibition.Produkttilmelding_Handler.makeCategoryReportWithOrderBy(Produkttilmelding_Handler.java:82) at ldfc.view.exhibition2.reports.JPanel_Exhibition2_Reports_Print_Registered_Products_In_categories.jButton_Exhibition2_Reports_Print_Registered_Products_In_Categories_Exhibition_PrintActionPerformed(JPanel_Exhibition2_Reports_Print_Registered_Products_In_categories.java:129) at ldfc.view.exhibition2.reports.JPanel_Exhibition2_Reports_Print_Registered_Products_In_categories.access$000(JPanel_Exhibition2_Reports_Print_Registered_Products_In_categories.java:23) at ldfc.view.exhibition2.reports.JPanel_Exhibition2_Reports_Print_Registered_Products_In_categories$1.actionPerformed(JPanel_Exhibition2_Reports_Print_Registered_Products_In_categories.java:81) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source) at javax.swing.JComponent.processMouseEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) at java.awt.Container.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Window.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$200(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source)

PLEASE HELP!Am running into a same error where all Jasper reports are failing with "java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 0" exception. Has the issue been identified?

My stack trace looks as below:[8/1/13 9:41:36:563 CDT] 00000044 SystemErr R java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 0[8/1/13 9:41:36:563 CDT] 00000044 SystemErr R at sun.font.ExtendedTextSourceLabel.createCharinfo(ExtendedTextSourceLabel.java:568)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at sun.font.ExtendedTextSourceLabel.getCharinfo(ExtendedTextSourceLabel.java:468)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at sun.font.ExtendedTextSourceLabel.getLineBreakIndex(ExtendedTextSourceLabel.java:414)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at java.awt.font.TextMeasurer.calcLineBreak(TextMeasurer.java:337)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at java.awt.font.TextMeasurer.getLineBreakIndex(TextMeasurer.java:573)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at java.awt.font.LineBreakMeasurer.nextOffset(LineBreakMeasurer.java:362)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at java.awt.font.LineBreakMeasurer.nextLayout(LineBreakMeasurer.java:444)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at java.awt.font.LineBreakMeasurer.nextLayout(LineBreakMeasurer.java:417)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.TextMeasurer.renderNextLine(TextMeasurer.java:611)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.TextMeasurer.renderParagraph(TextMeasurer.java:444)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.TextMeasurer.measure(TextMeasurer.java:397)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.JRFillTextElement.chopTextElement(JRFillTextElement.java:1130)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.JRFillTextField.prepare(JRFillTextField.java:554)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.JRFillElementContainer.prepareElements(JRFillElementContainer.java:329)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.JRFillBand.fill(JRFillBand.java:419)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.JRFillBand.fill(JRFillBand.java:378)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillTitle(JRVerticalFiller.java:328)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:262)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:128)[8/1/13 9:41:36:564 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:946)[8/1/13 9:41:36:565 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:864)[8/1/13 9:41:36:565 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:84)[8/1/13 9:41:36:565 CDT] 00000044 SystemErr R at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:624) 2ff7e9595c