Tab contrast too low #649
Description
Describe the bug
I find it hard to see which tab is active.
To Reproduce
Steps to reproduce the behavior:
- Select a JVM process.
- Click on Sampler.
- Wonder what you're looking at as there is barely any indication of which tab is active.
Expected behavior
A clearly visible indication of which tab is the active one.
Screenshots
Desktop (please complete the following information):
- OS: Windows 11 Home 24H2 26100.6899 Windows Feature Experience Pack 1000.26100.253.0 (dark mode)
- JDK version: I can't even find the JRE version in VisualVM 2.2; Windows Settings, Apps, Installed apps, "java" shows only "Java(TM) SE Development Kit 24 (64-bit) 24.0.0.0 | Oracle Corporation | 31-3-2025 386 MB". Clicking the "Heap Dump" label on the Sampler tab shows Java Home/Version: ...can't copy the value, but "VS Code extension RedHat Java OpenJDK 64-bit Server VM (21.0.8+9-LTS, mixed mode, sharing)"
- Version: 2.2
About, Details, Copy to Clipboard:
Version:
2.2 (Build 250417); platform 20250323-0d0bfcf3fa
System:
Windows 11 (10.0) , amd64 64bit
Java:
24; Java HotSpot(TM) 64-Bit Server VM (24+36-3646, mixed mode, sharing)
Vendor:
Oracle Corporation, https://java.oracle.com/
Environment:
UTF-8; en_US (visualvm)
User directory:
C:\Users\C\AppData\Roaming\VisualVM\2.2
Cache directory:
C:\Users\C\AppData\Local\VisualVM\Cache\2.2
Clusters:
C:\apps\visualvm_22\platform
C:\apps\visualvm_22\visualvm
Additional context
ChatGPT said this tool was the best free one for finding memory leaks, but there's an error when clicking the Memory button in the Profiler section:
The VisualVM Logfile in the About dialog shows a third Java version as well:
-------------------------------------------------------------------------------
>Log Session: Friday, October 24, 2025, 11:36:11 AM Central European Summer Time
>System Info:
Product Version = VisualVM 2.2
Operating System = Windows 11 version 10.0 running on amd64
Java; VM; Vendor = 24; Java HotSpot(TM) 64-Bit Server VM 24+36-3646; Oracle Corporation
Runtime = Java(TM) SE Runtime Environment 24+36-3646
Java Home = C:\Program Files\Java\jdk-24
System Locale; Encoding = en_US (visualvm); UTF-8
Home Directory = C:\Users\C
Current Directory = C:\apps\visualvm_22\bin
User Directory = C:\Users\C\AppData\Roaming\VisualVM\2.2
Cache Directory = C:\Users\C\AppData\Local\VisualVM\Cache\2.2
Installation = C:\apps\visualvm_22\visualvm
C:\apps\visualvm_22\platform
Boot & Ext. Classpath =
Application Classpath = C:\apps\visualvm_22\platform\lib\boot.jar;C:\apps\visualvm_22\platform\lib\org-openide-modules.jar;C:\apps\visualvm_22\platform\lib\org-openide-util-lookup.jar;C:\apps\visualvm_22\platform\lib\org-openide-util-ui.jar;C:\apps\visualvm_22\platform\lib\org-openide-util.jar
Startup Classpath = C:\apps\visualvm_22\platform\core\asm-9.7.jar;C:\apps\visualvm_22\platform\core\asm-commons-9.7.jar;C:\apps\visualvm_22\platform\core\asm-tree-9.7.jar;C:\apps\visualvm_22\platform\core\core-base.jar;C:\apps\visualvm_22\platform\core\core.jar;C:\apps\visualvm_22\platform\core\org-netbeans-libs-asm.jar;C:\apps\visualvm_22\platform\core\org-openide-filesystems.jar;C:\apps\visualvm_22\visualvm\core\org-graalvm-visualvm-modules-startup.jar;C:\apps\visualvm_22\visualvm\core\locale\core_visualvm.jar
-------------------------------------------------------------------------------
INFO [org.graalvm.visualvm.modules.startup.ImportSettings]: Skipping import, no supported userdirs found in: C:\Users\C\AppData\Roaming\VisualVM
INFO [org.netbeans.core.startup.NbEvents]: Turning on modules:
org.openide.util.lookup [8.58 20250323-0d0bfcf3fa]
org.openide.util [9.32 20250323-0d0bfcf3fa]
org.openide.util.ui [9.33 20250323-0d0bfcf3fa]
org.openide.modules [7.72 20250323-0d0bfcf3fa]
org.netbeans.api.annotations.common/1 [1.52 20250323-0d0bfcf3fa]
org.openide.filesystems [9.37 20250323-0d0bfcf3fa]
org.openide.awt [7.92 20250323-0d0bfcf3fa]
org.netbeans.api.progress/1 [1.72 20250323-0d0bfcf3fa]
org.netbeans.api.progress.nb [1.72 20250323-0d0bfcf3fa]
org.openide.dialogs [7.71 20250323-0d0bfcf3fa]
org.openide.nodes [7.69 20250323-0d0bfcf3fa]
org.openide.windows [6.101 20250323-0d0bfcf3fa]
org.netbeans.modules.editor.mimelookup/1 [1.64 20250323-0d0bfcf3fa]
org.openide.text [6.92 20250323-0d0bfcf3fa]
org.netbeans.api.scripting [1.21 20250323-0d0bfcf3fa]
org.netbeans.swing.tabcontrol [1.81 20250323-0d0bfcf3fa]
org.netbeans.swing.outline [1.58 20250323-0d0bfcf3fa]
org.openide.explorer [6.86 20250323-0d0bfcf3fa]
org.openide.actions [6.63 20250323-0d0bfcf3fa]
org.netbeans.modules.queries/1 [1.67 20250323-0d0bfcf3fa]
org.netbeans.api.templates [1.32 20250323-0d0bfcf3fa]
org.openide.filesystems.nb [9.34 20250323-0d0bfcf3fa]
org.openide.loaders [7.94 20250323-0d0bfcf3fa]
org.netbeans.api.intent [1.26 20250323-0d0bfcf3fa]
org.netbeans.api.io [1.27 20250323-0d0bfcf3fa]
org.openide.io [1.73 20250323-0d0bfcf3fa]
org.netbeans.swing.plaf [1.66 20250323-0d0bfcf3fa]
org.netbeans.modules.keyring [1.48 20250323-0d0bfcf3fa]
org.netbeans.libs.asm [5.27 20250323-0d0bfcf3fa]
org.netbeans.bootstrap/1 [2.103 20250323-0d0bfcf3fa]
org.netbeans.core.startup.base [1.86.0.1 1 20250323-0d0bfcf3fa]
org.netbeans.core.startup/1 [1.87.0.1 20250323-0d0bfcf3fa]
org.netbeans.modules.sampler [1.38 20250323-0d0bfcf3fa]
org.netbeans.core/2 [3.75 20250323-0d0bfcf3fa]
org.netbeans.spi.quicksearch [1.51 20250323-0d0bfcf3fa]
org.netbeans.modules.options.api/1 [1.69 20250323-0d0bfcf3fa]
org.netbeans.libs.flatlaf/1 [1.18 3.3 20250323-0d0bfcf3fa]
org.netbeans.swing.laf.flatlaf [1.17 20250323-0d0bfcf3fa]
org.netbeans.modules.settings/1 [1.73 20250323-0d0bfcf3fa]
org.netbeans.modules.sendopts/2 [2.60 20250323-0d0bfcf3fa]
org.netbeans.modules.progress.ui [1.57 20250323-0d0bfcf3fa]
org.netbeans.modules.options.keymap [1.61 20250323-0d0bfcf3fa]
org.netbeans.libs.jna/2 [2.19 20250323-0d0bfcf3fa]
org.netbeans.modules.masterfs/2 [2.79.0.2 2 20250323-0d0bfcf3fa]
org.netbeans.modules.masterfs.windows [1.40 20250323-0d0bfcf3fa]
org.netbeans.modules.masterfs.ui [2.27.0.2 20250323-0d0bfcf3fa]
org.netbeans.modules.masterfs.nio2 [1.39 20250323-0d0bfcf3fa]
org.netbeans.modules.keyring.fallback [1.32 20250323-0d0bfcf3fa]
org.netbeans.modules.keyring.impl [1.48 20250323-0d0bfcf3fa]
org.netbeans.modules.editor.mimelookup.impl/1 [1.56 20250323-0d0bfcf3fa]
org.netbeans.modules.autoupdate.services [1.80 20250323-0d0bfcf3fa]
org.netbeans.modules.autoupdate.ui [1.70 20250323-0d0bfcf3fa]
org.netbeans.modules.autoupdate.cli [1.38 20250323-0d0bfcf3fa]
org.netbeans.libs.jna.platform/2 [2.19 20250323-0d0bfcf3fa]
org.netbeans.core.windows/2 [2.109 20250323-0d0bfcf3fa]
org.netbeans.core.ui/1 [1.69 20250323-0d0bfcf3fa]
org.netbeans.core.network [1.36 20250323-0d0bfcf3fa]
org.netbeans.core.nativeaccess/1 [1.55 20250323-0d0bfcf3fa]
org.netbeans.core.multitabs/1 [1.36.0.1 1 20250323-0d0bfcf3fa]
org.netbeans.core.io.ui/1 [1.54 20250323-0d0bfcf3fa]
org.graalvm.visualvm.lib.jfluid/2 [2.19 250417]
org.graalvm.visualvm.lib.charts/2 [2.1 250417]
org.graalvm.visualvm.lib.common/2 [2.12 250417]
org.graalvm.visualvm.lib.profiler.api/2 [2.2 250417]
org.graalvm.visualvm.lib.ui/2 [2.4 250417]
org.graalvm.visualvm.uisupport/2 [2.1 250417]
org.graalvm.visualvm.core/2 [2.4 250417]
org.graalvm.visualvm.host/2 [2.1 250417]
org.graalvm.visualvm.application/2 [2.4 250417]
org.graalvm.visualvm.tools/2 [2.4 250417]
org.graalvm.visualvm.coredump/2 [2.1 250417]
org.graalvm.visualvm.threaddump/2 [2.1 250417]
org.graalvm.visualvm.lib.profiler.utilities/2 [2.0 250417]
org.graalvm.visualvm.lib.profiler.attach/2 [2.4 250417]
org.graalvm.visualvm.lib.profiler/2 [2.4 250417]
org.graalvm.visualvm.lib.profiler.snaptracer/2 [2.0 250417]
org.graalvm.visualvm.profiling/2 [2.3 250417]
org.graalvm.visualvm.lib.jfluid.heap [1.3 250417]
org.graalvm.visualvm.lib.profiler.oql/2 [2.0 250417]
org.graalvm.visualvm.lib.profiler.heapwalker/2 [2.2 250417]
org.graalvm.visualvm.heapviewer/2 [2.8 250417]
org.graalvm.visualvm.heapdump/2 [2.1 250417]
org.graalvm.visualvm.sampler.truffle/2 [2.1 250417]
org.graalvm.visualvm.sampler/2 [2.2 250417]
org.graalvm.visualvm.sa/2 [2.0 250417]
org.graalvm.visualvm.modules.startup/2 [2.1 250417]
org.graalvm.visualvm.profiler/2 [2.1 250417]
org.graalvm.visualvm.pluginimporter [1.0 250417]
org.graalvm.visualvm.nashorn.jdk15 [1.1 250417]
org.graalvm.visualvm.modules.killapp/1 [1.2 250417]
org.graalvm.visualvm.modules.appui/2 [2.1 250417]
org.graalvm.visualvm.jvmstat/2 [2.0 250417]
org.graalvm.visualvm.jvm/2 [2.0 250417]
org.graalvm.visualvm.jmx/2 [2.2 250417]
org.graalvm.visualvm.charts/2 [2.1 250417]
org.graalvm.visualvm.jfr/2 [2.3 250417]
org.graalvm.visualvm.jfr.jdk11/2 [2.2 250417]
org.graalvm.visualvm.jfr.generic/2 [2.5 250417]
org.graalvm.visualvm.host.views/2 [2.0 250417]
org.graalvm.visualvm.host.remote/2 [2.0 250417]
org.graalvm.visualvm.heapviewer.truffle/2 [2.1 250417]
org.graalvm.visualvm.heapviewer.console/2 [2.0 250417]
org.graalvm.visualvm.application.views/2 [2.1 250417]
org.graalvm.visualvm.graalvm/2 [2.0 250417]
org.graalvm.visualvm.gotosource/2 [2.0 250417]
org.graalvm.visualvm.attach/2 [2.0 250417]
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy resolver: Windows
INFO [org.netbeans.core.network.proxy.windows.WindowsNetworkProxy]: Windows system proxy resolver: auto detect
INFO [org.netbeans.core.network.proxy.windows.WindowsNetworkProxy]: Windows system proxy resolver: auto - PAC (http://wpad/wpad.dat)
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy reloading succeeded.
INFO [org.netbeans.ui.metrics.laf]: USG_LOOK_AND_FEEL
Diagnostic information
Input arguments:
-Xms24m
-Xmx768m
-Dnetbeans.accept_license_class=org.graalvm.visualvm.modules.startup.AcceptLicense
-Dnetbeans.importclass=org.graalvm.visualvm.modules.startup.ImportSettings
-Dsun.jvmstat.perdata.syncWaitMs=10000
-Dsun.java2d.noddraw=true
-Dsun.java2d.d3d=false
-DTopSecurityManager.disable=true
-Dorg.netbeans.core.TimeableEventQueue.quantum=360000
-Dpolyglot.js.nashorn-compat=true
-Dsun.misc.URLClassPath.disableJarChecking=true
-Djdk.attach.allowAttachSelf=true
-Dorg.openide.util.ImageUtilities.level=950
--add-exports=java.desktop/com.sun.java.swing.plaf.gtk=ALL-UNNAMED
--add-exports=java.desktop/sun.awt=ALL-UNNAMED
--add-exports=jdk.internal.jvmstat/sun.jvmstat.monitor.event=ALL-UNNAMED
--add-exports=jdk.internal.jvmstat/sun.jvmstat.monitor=ALL-UNNAMED
--add-exports=java.desktop/sun.swing=ALL-UNNAMED
--add-exports=jdk.attach/sun.tools.attach=ALL-UNNAMED
--add-opens=java.desktop/sun.awt.X11=ALL-UNNAMED
--add-opens=java.desktop/javax.swing.plaf.synth=ALL-UNNAMED
--add-opens=java.base/java.net=ALL-UNNAMED
--add-opens=java.base/java.lang.ref=ALL-UNNAMED
--add-opens=java.base/java.lang=ALL-UNNAMED
--add-opens=java.desktop/javax.swing=ALL-UNNAMED
--add-opens=java.desktop/javax.swing.plaf.basic=ALL-UNNAMED
-XX:+IgnoreUnrecognizedVMOptions
-Djdk.home=C:\Program Files\Java\jdk-24
-Dnetbeans.home=C:\apps\visualvm_22\platform
-Dnetbeans.user=C:\Users\C\AppData\Roaming\VisualVM\2.2
-Dnetbeans.default_userdir_root=C:\Users\C\AppData\Roaming\VisualVM
-XX:+HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath=C:\Users\C\AppData\Roaming\VisualVM\2.2\var\log\heapdump.hprof
-Dsun.awt.keepWorkingSetOnMinimize=true
-Dnetbeans.dirs=C:\apps\visualvm_22\visualvm
Compiler: HotSpot 64-Bit Tiered Compilers
Heap memory usage: initial 24,0MB maximum 768,0MB
Non heap memory usage: initial 7,3MB maximum -1b
Garbage collector: G1 Young Generation (Collections=15 Total time spent=0s)
Garbage collector: G1 Concurrent GC (Collections=10 Total time spent=0s)
Garbage collector: G1 Old Generation (Collections=0 Total time spent=0s)
Classes: loaded=6169 total loaded=6169 unloaded 0
INFO [org.netbeans.core.ui.warmup.DiagnosticTask]: Total memory 68.556.128.256
INFO [null]: Total physical memory 68.556.128.256
INFO [org.netbeans.core.network.proxy.ProxyAutoConfig]: PAC script http://wpad/wpad.dat unavailable, proxy disabled
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy - mode: auto
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy - pac url: http://wpad/wpad.dat
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy TEST - http host:
INFO [org.netbeans.core.network.proxy.NetworkProxyReloader]: System network proxy TEST - http port: 0
*** Profiler message (Fri Oct 24 11:38:55 CEST 2025): Starting target application...
C:\Users\C\.vscode\extensions\redhat.java-1.46.0-win32-x64\jre\21.0.8-win32-x86_64\bin\java.exe -agentpath:C:/apps/visualvm_22/visualvm/lib/deployed/jdk16/windows-amd64/profilerinterface.dll -Xbootclasspath/a:C:\apps\visualvm_22\visualvm\lib\jfluid-server.jar;C:\apps\visualvm_22\visualvm\lib\jfluid-server-15.jar org.graalvm.visualvm.lib.jfluid.server.ProfilerServer C:/apps/visualvm_22/visualvm/lib/deployed/jdk16/windows-amd64 5141 10 ____Profiler+Calibration+Run____
WARNING [org.graalvm.visualvm.lib.profiler.NetBeansProfiler]: Could not find a CCT provider in lookup!
takeHeapDump: Dumping heap to C:\Users\C\AppData\Local\Temp\visualvm_C.dat\localhost_10856\heapdump-1761298833487.hprof ...
Heap dump file created [383193108 bytes in 0.403 secs]
takeHeapDump: Dumping heap to C:\Users\C\AppData\Local\Temp\visualvm_C.dat\localhost_10856\heapdump-1761299777194.hprof ...
Heap dump file created [603803844 bytes in 0.867 secs]