More code cleanup here, will do it after verifying the reports from the since checker tool

The checker outputs the following

STDERR:
method: void java.awt.geom.Path2D.Double.trimToSize(): `@since` version is 9 instead of 10
method: void java.awt.geom.Path2D.Float.trimToSize(): `@since` version is 9 instead of 10
java.beans: package-info.java does not contain an `@since`
Unable to retrieve `@since` for Package: package: java.beans
javax.swing: package-info.java does not contain an `@since`
Unable to retrieve `@since` for Package: package: javax.swing
method: void javax.swing.DefaultListModel.addAll(java.util.Collection): `@since` version is 9 instead of 11
method: void javax.swing.DefaultListModel.addAll(int,java.util.Collection): `@since` version is 9 instead of 11
method: void javax.swing.JSlider.AccessibleJSlider.stateChanged(javax.swing.event.ChangeEvent): `@since` version is 9 instead of 16
method: int javax.swing.JSlider.AccessibleJSlider.getAccessibleActionCount(): `@since` version is 9 instead of 17
method: java.lang.String javax.swing.JSlider.AccessibleJSlider.getAccessibleActionDescription(int): `@since` version is 9 instead of 17
method: boolean javax.swing.JSlider.AccessibleJSlider.doAccessibleAction(int): `@since` version is 9 instead of 17
method: void javax.swing.DefaultComboBoxModel.addAll(java.util.Collection): `@since` version is 9 instead of 11
method: void javax.swing.DefaultComboBoxModel.addAll(int,java.util.Collection): `@since` version is 9 instead of 11
method: void javax.swing.plaf.basic.BasicSliderUI.<init>(): `@since` version is 9 instead of 16
javax.swing.plaf.synth: package-info.java does not contain an `@since`
Unable to retrieve `@since` for Package: package: javax.swing.plaf.synth
field: javax.swing.text.DefaultEditorKit:beginLineUpAction: `@since` version is 9 instead of 20
field: javax.swing.text.DefaultEditorKit:endLineDownAction: `@since` version is 9 instead of 20
java.lang.Exception: The `@since` checker found 19 problems