I set java.home to "/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home", when I open a java file, the vscode shows the warning message "Classpath is incomplete. Only syntax errors will be reported.", what's wrong? How can I fix this issue?

This warning message is from this file: https://github.com/gorkem/java-language-server/blob/74efc7ac1d9c9abb6728864111e33b1eb4d5e483/org.jboss.tools.vscode.java/src/org/jboss/tools/vscode/java/internal/handlers/DocumentLifeCycleHandler.java#L114

Environment

• Operating System: macOS Sierra 10.12.1
• JDK version: 1.8.0_102
• Visual Studio Code version: 1.7.2
• Java extension version: 1.8.0_102

Steps To Reproduce

1. on settings.json file, set java.home to "/Library/Java/JavaVirtualMachines/jdk1.8.0_102.jdk/Contents/Home"
2. reload window
3. open a java file