In Solaris Headless Testsuite fails throwing NPE at java.util.Hashtable.get(Hashtable.java) when different methods related to the same is called

BEGIN: javax.swing.JEditorPane: do__init__0
  !! FAIL: javax.swing.JEditorPane: do__init__0 status=fail with exception=java.lang.NullPointerException
java.lang.NullPointerException
        at java.util.Hashtable.get(Hashtable.java:320)
        at java.awt.Component.getFontMetrics(Component.java:2125)
        at javax.swing.text.WrappedPlainView.updateMetrics(WrappedPlainView.java:304)
        at javax.swing.text.WrappedPlainView.updateChildren(WrappedPlainView.java:283)
        at javax.swing.text.WrappedPlainView.insertUpdate(WrappedPlainView.java:446)
        at javax.swing.plaf.basic.BasicTextUI$RootView.insertUpdate(BasicTextUI.java:1414)
        at javax.swing.plaf.basic.BasicTextUI$UpdateHandler.insertUpdate(BasicTextUI.java:1643)
        at javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:185)
        at javax.swing.text.AbstractDocument.handleInsertString(AbstractDocument.java:736)
        at javax.swing.text.AbstractDocument.insertString(AbstractDocument.java:693)
        at javax.swing.text.PlainDocument.insertString(PlainDocument.java:117)
        at javax.swing.text.DefaultEditorKit.read(DefaultEditorKit.java:244)
        at javax.swing.JEditorPane.setText(JEditorPane.java:1285)
        at javax.swing.JEditorPane.<init>(JEditorPane.java:268)
        at javax_swing_JEditorPane.do__init__0(javax_swing_JEditorPane.java:18)
        at javax_swing_JEditorPane.run(javax_swing_JEditorPane.java:3780)
        at java.lang.Thread.run(Thread.java:579)

Testsuite is available at
/net/sqesvr/export/awt/awt_ws/Headless

Attached is the failiure scenarios which throws NPE and the complete Test Report