Fix NoSuchMethodError in Hop Web when changing GUI options#6546
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hansva merged 1 commit intoapache:mainfrom Feb 11, 2026
Merged
Fix NoSuchMethodError in Hop Web when changing GUI options#6546hansva merged 1 commit intoapache:mainfrom
hansva merged 1 commit intoapache:mainfrom
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Display.isSystemDarkTheme() method is not available in Eclipse RAP (Web environment). Calling this method causes java.lang.NoSuchMethodError exception when users try to change locale or other GUI options in Hop Web. Changes: - Add EnvironmentUtils.getInstance().isWeb() check in ConfigGuiOptionsTab.java - In reloadValues(): use stored dark mode preference in Web environment - In saveValues(): use checkbox selection value in Web environment This fix allows Hop Web users to change locale and GUI settings without errors.
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Thanks @chuheridangwua ! |
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Problem
When using Hop Web (RAP-based web interface) and changing locale or other GUI options, the application crashes with HTTP 500 error:
java.lang.NoSuchMethodError: 'boolean org.eclipse.swt.widgets.Display.isSystemDarkTheme()'
at org.apache.hop.ui.hopgui.perspective.configuration.tabs.ConfigGuiOptionsTab.saveValues(ConfigGuiOptionsTab.java:945)
Root Cause
Display.isSystemDarkTheme()is a desktop SWT API that is not available in Eclipse RAP (Web environment). TheConfigGuiOptionsTabclass calls this method without checking if running inweb mode.
Solution
Added
EnvironmentUtils.getInstance().isWeb()check before callingDisplay.isSystemDarkTheme():Changes
ui/src/main/java/.../ConfigGuiOptionsTab.javareloadValues()methodsaveValues()methodTesting