Warning messages (Moving from JDK1.4 to DJK1.5)

Question

I got some warning messages after I moved from 1.4 to 1.5, can someone show me the right way to avoid them ?
=====================================================================
Scanner.java:909: warning: [unchecked] unchecked call to add(E) as a member of the raw type java.util.Vector
Region[Region_Id].add(region_element);
In my code :
region_element=new Region_Element();
static Vector Region[]=new Vector[64];
I tied :
static Vector<Region_Element> Region[]=new Vector<Region_Element>[64];
but still got warning message.
=====================================================================
Set_Maker.java:31: warning: [unchecked] unchecked cast
found : java.lang.Object
required: java.util.TreeSet<java.lang.Object>
try { S1=(TreeSet<Object>)o1; }
In my code :
static final Comparator<Object> TreeSet_Order=new Comparator<Object>()
public int compare(Object o1,Object o2)
if (Debug) System.out.println("=00= o1="+o1+" o2="+o2);
TreeSet<Object> S1=new TreeSet<Object>(TreeSet_Order);
TreeSet<Object> S2=new TreeSet<Object>(TreeSet_Order);
try { S1=(TreeSet<Object>)o1; } // Line 31
catch (ClassCastException e) { S1.add(o1); }
==================================================================
JDBCAdapter.java:190: warning: [unchecked] unchecked call to setElementAt(E,int) as a member of the raw type java.util.Vector
dataRow.setElementAt(value, column);
In my code :
Vector     rows=new Vector();
public void setValueAt(Object value,int row,int column)
Vector dataRow=(Vector)rows.elementAt(row);
dataRow.setElementAt(value, column); // Line 190
=================================================================
TableSorter.java:60: warning: [unchecked] unchecked call to compareTo(T) as a member of the raw type java.lang.Comparable
public int compare(Object o1, Object o2) { return ((Comparable) o1).compareTo(o2); }
In my code :
public static final Comparator COMPARABLE_COMAPRATOR = new Comparator()
public int compare(Object o1, Object o2) { return ((Comparable) o1).compareTo(o2); } // Line 60
==================================================================
TableSorter.java:260: warning: [unchecked] unchecked call to compare(T,T) as a member of the raw type java.util.Comparator
else { comparison = getComparator(column).compare(o1, o2); }
In my code :
protected Comparator getComparator(int column)
Class columnType = tableModel.getColumnClass(column);
Comparator comparator = (Comparator) columnComparators.get(columnType);
if (comparator != null) { return comparator; }
if (Comparable.class.isAssignableFrom(columnType)) { return COMPARABLE_COMAPRATOR; }
return LEXICAL_COMPARATOR;
Object o1 = tableModel.getValueAt(row1, column);
Object o2 = tableModel.getValueAt(row2, column);
else { comparison = getComparator(column).compare(o1, o2); } // Line 260

Answer 1

I have tried so many ways but I can't seem to get rid of the warning on this matter. I have no idea how to use the generics on Vector. The other part of Generics I can undertand but just this. In my case I am adding multiple types of datatype and how am I supposed just say if it is supposed to be
<String> or <Interger>or a
<Double>. I even tried using the Wildcard
<?>. Still no effect on it. Earlier I was trying it out with a Cosole program so I just revised the Version back to 1.4 SDK but now I am implementing a GUI to the program and I am in a real need to know how to solve it since I have to use the 1.5 JDK. Please Help me. I can't even find an example out there which uses Generic type methods to add to the Vector using the getter and setter method. Could there be a problem with the getter or setter of the program?