java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0

[Reelix]

Was rapidly scrolling around some classes when a crash error popped up.

Unable to replicate it, so I'm just posting it here in case you have better luck with figuring out what went wrong :)

If it helps, I was scrolling using a Laptop touchpad. Not sure if that's relevant.

• Jadx version: 1.4.2
• Java version: 11.0.15
• Java VM: Private Build OpenJDK 64-Bit Server VM
• Platform: Linux (5.15.0-41-generic amd64)
• Max heap size: 16704 MB
• Program args: -Xms128M -XX:MaxRAMPercentage=70.0 -XX:+UseG1GC -Dawt.useSystemAAFontSettings=lcd -Dswing.aatext=true

java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
	at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64)
	at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70)
	at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248)
	at java.base/java.util.Objects.checkIndex(Objects.java:372)
	at java.base/java.util.ArrayList.get(ArrayList.java:459)
	at jadx.gui.utils.JumpManager.getPrev(JumpManager.java:60)
	at jadx.gui.ui.TabbedPane.navBack(TabbedPane.java:288)
	at jadx.gui.ui.MainWindow.lambda$registerMouseNavigationButtons$12(MainWindow.java:1329)
	at java.desktop/java.awt.Toolkit$SelectiveAWTEventListener.eventDispatched(Toolkit.java:2198)
	at java.desktop/java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2089)
	at java.desktop/java.awt.Toolkit$ToolkitEventMulticaster.eventDispatched(Toolkit.java:2089)
	at java.desktop/java.awt.Toolkit.notifyAWTEventListeners(Toolkit.java:2046)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4917)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4843)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4544)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2772)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4843)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

[jpstotz]

Thanks for reporting. Most likely you had opened a file in Jadx, worked with it and later opened a second file, replacing the first.
In that situation the error you have posted can occur. The PR I have created should fix this problem.

[skylot]

Fixed in PR #1577 by @jpstotz