Java was started but returned exit code=1

Off-topic Testing Efficiency
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After the new Katalon update, I received the following error… not sure how to fix it.
“Java was started but returned exit code=1”

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At first, you should make a search in Google with key ”Java was started but returned exit code=1”. Then you will receive several resources concerned about that massage. These resources would suggest something to you.

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Fix: “Java was started but returned exit code=1” in Katalon Studio

Step-by-Step Resolution

  1. Java Compatibility Check
  • Verify Java Install:

bash

java -version  # Expect output like Java 17 (e.g., "17.0.6")
  • Fix Missing Java:
    Install Java 17 via:

bash

# Mac: Use Homebrew
brew install zulu17  
# Windows: Download from Zulu’s site
  • Set JAVA_HOME:

bash

# Mac
export JAVA_HOME=$(/usr/libexec/java_home -v 17)
# Windows
Set environment variable: JAVA_HOME = path_to_jdk17
  1. Clean Reinstall
  • Full Uninstall:

bash

# Mac
rm -rf ~/Applications/Katalon\ Studio.app
rm -rf ~/Library/Application\ Support/Katalon
# Windows
Revo Uninstaller → Remove Katalon + all config
  • Fresh Install:
    Download latest version from Katalon Website.
    3.Deselect “Java Optional”* during install → Use existing Java.
  1. Increase Memory Allocation
  • Modify Katalon.ini:

text

# Mac: Katalon Studio.app/Contents/MacOS/Katalon.ini
# Windows: Katalon.ini in installed directory
-Xms1g -Xmx2g  # Adjust based on RAM (e.g., 4GB → -Xms4g -Xmx4g)
  1. Reset Workspace
  • New Workspace:
    File → Switch Workspace → Choose new folder → Recreate project

If error persists, Provide These Logs:

  1. Error Log:

bash

# Mac
tail ~/Library/Application\ Support/Katalon/App setName']/config/.metadata/.plugins/org.eclipse.ui.workbench/log  
# Windows
%HOMEPATH%.kks\latestVersion\.metadata\.plugins\org.eclipse.ui.workbench\log
  1. Java Runtime Verification:

bash

javac -version  # Should show 17
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Welcome to the community, @JP_FLT!
We’re glad to have you here, let us know how it went, we would love to hear from you :blush: