public void testEquals() throws Exception {
   TermAttributeImpl t1a = new TermAttributeImpl();
   char[] content1a = "hello".toCharArray();
   t1a.setTermBuffer(content1a, 0, 5);
   TermAttributeImpl t1b = new TermAttributeImpl();
   char[] content1b = "hello".toCharArray();
   t1b.setTermBuffer(content1b, 0, 5);
   TermAttributeImpl t2 = new TermAttributeImpl();
   char[] content2 = "hello2".toCharArray();
   t2.setTermBuffer(content2, 0, 6);
   assertTrue(t1a.equals(t1b));
   assertFalse(t1a.equals(t2));
   assertFalse(t2.equals(t1b));
 }