Fix possible InaccessibleObjectExceptions during debugging session

[mbien]

Opening the popup table during a breakpoint for a variable can cause reflection exceptions due to JDK module encapsulation.

e.g for a java.util.Date field:

click on the > symbol

java.lang.reflect.InaccessibleObjectException: Unable to make field long sun.util.calendar.BaseCalendar$Date.cachedFixedDateJan1 accessible: module java.base does not "opens sun.util.calendar" to unnamed module @493e76e4
	at java.base/java.lang.reflect.AccessibleObject.throwInaccessibleObjectException(AccessibleObject.java:388)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:364)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:312)
	at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:183)
	at java.base/java.lang.reflect.Field.setAccessible(Field.java:177)
	at org.netbeans.modules.debugger.jpda.models.VariableMirrorTranslator.setFieldsValues(VariableMirrorTranslator.java:253)
	at org.netbeans.modules.debugger.jpda.models.VariableMirrorTranslator.createMirrorObject(VariableMirrorTranslator.java:239)
	at org.netbeans.modules.debugger.jpda.models.VariableMirrorTranslator.createMirrorObject(VariableMirrorTranslator.java:114)
	at org.netbeans.modules.debugger.jpda.models.VariableMirrorTranslator.setFieldsValues(VariableMirrorTranslator.java:261)
	at org.netbeans.modules.debugger.jpda.models.VariableMirrorTranslator.createMirrorObject(VariableMirrorTranslator.java:239)
	at org.netbeans.modules.debugger.jpda.models.VariableMirrorTranslator.createMirrorObject(VariableMirrorTranslator.java:114)
	at org.netbeans.modules.debugger.jpda.models.VariableMirrorTranslator.createMirrorObject(VariableMirrorTranslator.java:95)
	at org.netbeans.modules.debugger.jpda.models.AbstractVariable.createMirrorObject(AbstractVariable.java:463)
	at org.netbeans.modules.debugger.jpda.ui.models.VariablesTableModel.getValueOf(VariablesTableModel.java:193)
	at org.netbeans.modules.debugger.jpda.ui.models.VariablesTableModel.getValueAt(VariablesTableModel.java:158)
	at org.netbeans.spi.viewmodel.Models$DelegatingTableModel.getValueAt(Models.java:2249)
	at org.netbeans.modules.debugger.jpda.ui.models.NumericDisplayFilter.getValueAt(NumericDisplayFilter.java:112)
	at org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1439)
	at org.netbeans.modules.debugger.jpda.ui.models.VariablesTreeModelFilter.getValueAt(VariablesTreeModelFilter.java:530)
	at org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1439)
	at org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1441)
	at org.netbeans.spi.viewmodel.Models$CompoundTableModel.getValueAt(Models.java:1441)
	at org.netbeans.spi.viewmodel.Models$CompoundModel.getValueAt(Models.java:4563)
[catch] at org.netbeans.modules.viewmodel.TreeModelNode$MyProperty.run(TreeModelNode.java:1883)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1403)
	at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
	at org.openide.util.lookup.Lookups.executeWith(Lookups.java:287)
	at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2018)

[matthiasblaesing]

Makes sense to me. Thank you for fixing this!