[GROOVY-10070] Groovy classes (for Groovy < 4) cannot access protected methods from base classes under Java 16

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.8, 3.0.9
• Fix Version/s: 3.0.16
• Component/s: groovy-runtime
• Labels: jdk16

Language

groovy

• Assignee: Eric Milles
• Reporter: Dimitry Polivaev
• Created: 02/May/21 16:35
• Updated: 23/Jul/23 14:17
• Resolved: 14/Feb/23 16:56

Description

Running following script in Groovy Console

import javax.swing.DefaultListModel
class MyDefaultListModel extends DefaultListModel<String>{
    void test(){
        println(System.getProperty('java.version'))
        fireIntervalAdded( this, 0, 1 )
        println "passed"
    }
}
tested = new MyDefaultListModel()
tested.test()

generates following output:

16.0.1
Exception thrown

groovy.lang.MissingMethodException: No signature of method: MyDefaultListModel.fireIntervalAdded() is applicable for argument types: (MyDefaultListModel, Integer, Integer) values: [[], 0, 1]
	at MyDefaultListModel.test(ConsoleScript4:5)
	at MyDefaultListModel$test.call(Unknown Source)
	at ConsoleScript4.run(ConsoleScript4:10)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

The called method is declared as protected void fireIntervalAdded(Object, int, int) in javax.swing.AbstractListModel

Running under Java 15 it generates following output:

15.0.2
passed

Issue Links

• fixes: GROOVY-11112 Calling SwingWorker publish() method aborts with groovy.lang.MissingMethodException
• is related to: GROOVY-9596 Cannot access protected field of Java superclass with --illegal-access=deny
• is related to: GROOVY-10319 Groovy3 CompileStatic bug: Method clone is protected in java.lang.Object
• is related to: GROOVY-9144 Fix warning "An illegal reflective access operation has occurred"