Program: 51175
Project: 51175
Buggy source:
public void mouseReleased(MouseEvent e){
  if (e.isPopupTrigger()) {
    int x=e.getX();
    int y=e.getY();
    TreePath path=tree.getPathForLocation(x,y);
    if (path != null) {
      jPopupMenu.removeAll();
      Object pathSelected=path.getLastPathComponent();
      if (pathSelected instanceof MondrianGuiDef.Schema) {
        jPopupMenu.add(addCube);
        jPopupMenu.add(addDimension);
        jPopupMenu.add(addNamedSet);
        jPopupMenu.add(addUserDefinedFunction);
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(addVirtualCube);
        jPopupMenu.add(addRole);
      }
 else       if (pathSelected instanceof MondrianGuiDef.Cube) {
        jPopupMenu.add(addDimension);
        jPopupMenu.add(addDimensionUsage);
        jPopupMenu.add(addMeasure);
        jPopupMenu.add(addCalculatedMember);
        jPopupMenu.add(addNamedSet);
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.Dimension) {
        jPopupMenu.add(addHierarchy);
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.Hierarchy) {
        jPopupMenu.add(addLevel);
        jPopupMenu.add(addRelation);
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
        if (((MondrianGuiDef.Hierarchy)pathSelected).relation == null) {
          addRelation.setEnabled(true);
        }
 else {
          addRelation.setEnabled(false);
        }
      }
 else       if (pathSelected instanceof MondrianGuiDef.Level) {
        jPopupMenu.add(addProperty);
        jPopupMenu.add(addKeyExp);
        if (((MondrianGuiDef.Level)pathSelected).keyExp == null) {
          addKeyExp.setEnabled(true);
        }
 else {
          addKeyExp.setEnabled(false);
        }
        jPopupMenu.add(addNameExp);
        if (((MondrianGuiDef.Level)pathSelected).nameExp == null) {
          addNameExp.setEnabled(true);
        }
 else {
          addNameExp.setEnabled(false);
        }
        jPopupMenu.add(addOrdinalExp);
        if (((MondrianGuiDef.Level)pathSelected).ordinalExp == null) {
          addOrdinalExp.setEnabled(true);
        }
 else {
          addOrdinalExp.setEnabled(false);
        }
        jPopupMenu.add(addParentExp);
        if (((MondrianGuiDef.Level)pathSelected).parentExp == null) {
          addParentExp.setEnabled(true);
        }
 else {
          addParentExp.setEnabled(false);
        }
        jPopupMenu.add(addClosure);
        if (((MondrianGuiDef.Level)pathSelected).closure == null) {
          addClosure.setEnabled(true);
        }
 else {
          addClosure.setEnabled(false);
        }
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.KeyExpression || pathSelected instanceof MondrianGuiDef.NameExpression || pathSelected instanceof MondrianGuiDef.OrdinalExpression|| pathSelected instanceof MondrianGuiDef.ParentExpression) {
        jPopupMenu.add(addSQL);
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.RelationOrJoin) {
        Object po=path.getParentPath().getLastPathComponent();
        if (!(po instanceof MondrianGuiDef.RelationOrJoin) && !(po instanceof MondrianGuiDef.Closure)) {
          if (po instanceof MondrianGuiDef.Cube) {
            jPopupMenu.add(addAggName);
            jPopupMenu.add(addAggPattern);
            jPopupMenu.add(addAggExclude);
          }
 else {
            jPopupMenu.add(delete);
          }
        }
 else {
          return;
        }
      }
 else       if (pathSelected instanceof MondrianGuiDef.Measure) {
        jPopupMenu.add(addMeasureExp);
        if (((MondrianGuiDef.Measure)pathSelected).measureExp == null) {
          addMeasureExp.setEnabled(true);
        }
 else {
          addMeasureExp.setEnabled(false);
        }
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.MeasureExpression) {
        jPopupMenu.add(addSQL);
        addSQL.setEnabled(true);
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.Closure) {
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.AggName || pathSelected instanceof MondrianGuiDef.AggPattern) {
        jPopupMenu.add(addAggFactCount);
        jPopupMenu.add(addAggIgnoreColumn);
        jPopupMenu.add(addAggForeignKey);
        jPopupMenu.add(addAggMeasure);
        jPopupMenu.add(addAggLevel);
        if (pathSelected instanceof MondrianGuiDef.AggPattern) {
          jPopupMenu.add(addAggExclude);
          if (((MondrianGuiDef.AggPattern)pathSelected).factcount == null) {
            addAggFactCount.setEnabled(true);
          }
 else {
            addAggFactCount.setEnabled(false);
          }
        }
 else {
          if (((MondrianGuiDef.AggName)pathSelected).factcount == null) {
            addAggFactCount.setEnabled(true);
          }
 else {
            addAggFactCount.setEnabled(false);
          }
        }
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.VirtualCube) {
        jPopupMenu.add(addVirtualCubeDimension);
        jPopupMenu.add(addVirtualCubeMeasure);
        jPopupMenu.add(addCalculatedMember);
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.Role) {
        jPopupMenu.add(addSchemaGrant);
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.SchemaGrant) {
        jPopupMenu.add(addCubeGrant);
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.CubeGrant) {
        jPopupMenu.add(addDimensionGrant);
        jPopupMenu.add(addHierarchyGrant);
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else       if (pathSelected instanceof MondrianGuiDef.HierarchyGrant) {
        jPopupMenu.add(addMemberGrant);
        jPopupMenu.add(jSeparator1);
        jPopupMenu.add(delete);
      }
 else {
        jPopupMenu.add(delete);
      }
      jPopupMenu.show(tree,x,y);
    }
  }
}

Fixed version (ground truth):
public void mouseReleased(MouseEvent e){
  showMenu(e);
}