I have an odd (in my mind) problem. I am currently making a Custom JComboBoxModel for some custom functionality I need from a Custom Renderer I am not yet certain how to deal with, I will post regarding that later.
Regardless, as the Title suggested I am getting some Type errors.
Here is the classes (current) code:
package miscclasses;
import java.util.ArrayList;
import javax.swing.AbstractListModel;
public class CustomComboBoxModel<String> extends AbstractListModel<String> {
/**
* Contains a list of row indexes that shouldn't be displayed.
*/
private ArrayList<String> alreadySelectedIndexes;
/**
* The comboBoxes selected index.
*/
private int selectedIndex=-1;
/**
* Contains a list of values in this model.
*/
private ArrayList<String> vals;
/**
* Creates an empty CustomComboBoxModel.
*/
public CustomComboBoxModel() {
this.alreadySelectedIndexes=new ArrayList<>();
this.vals = new ArrayList<>();
}
/**Creates a CustomComboBoxModel with the values passed in.
*
* @param values the row values.
*/
public CustomComboBoxModel(ArrayList<String> values) {
this();
this.vals.addAll(values);
}
public CustomComboBoxModel(ArrayList<String> values, ArrayList<String> alreadySelected) {
this(values);
this.alreadySelectedIndexes.addAll(alreadySelected);
}
public CustomComboBoxModel(ArrayList<String> values, ArrayList<String> alreadySelected, int selectedIndex) {
this(values, alreadySelected);
this.selectedIndex=selectedIndex;
}
public CustomComboBoxModel(ArrayList<String> values, ArrayList<String> alreadySelected, String selectedValue) {
this(values, alreadySelected);
if(!this.vals.isEmpty()) {
//this.selectedIndex = Misc.containsI(this.vals, selectedValue);
}
}
@Override
public int getSize() {
return this.vals.size();
}
@Override
public String getElementAt(int i) {
return this.vals.get(i);
}
public boolean isRowSelected(int i) {
return ((!this.alreadySelectedIndexes.contains(Integer.toString(i)))?false:true);
}
}
The error I am receiving is on line 55 where I attempt to get the selected values index. This is the commented line in the constructor that accepts two ArrayList lists and a String value. The error states that there is "no suitable method for containsI(java.util.ArrayList,String) method miscclasses.Misc.containsI(java.util.ArrayList, java.lang.String) is not applicable".
So far as I know String and java.lang.String are the exact same thing. As such I cannot seem to figure out what could cause this issue, and thought I would come to ask those more knowledgeable in the ways of Code-fu than I.
For reference, the Misc.containsI(ArrayList,String) code is here:
/**
* Finds the index of value Target. Returns -1 if this ArrayList doesn't contain Target.
* @param a ArrayList of Strings a.
* @param target Value to find.
* @return Index of target if found; Else returns -1.
*/
public static int containsI(ArrayList<String> a, String target) {
for (int i = 0; i < a.size(); i++)
{
if(a.get(i).equalsIgnoreCase(target))
return i;
}
return -1;
}
I am also strangely receiving the following warning in my isRowSelected(int i) function: "Suspcious call to java.util.Collection.contains: Expected type String, actual type String".
Again, I don't understand why I am getting warning. It seems to be entirely valid code, and I have done similar before. Any help with this odd warning and error, would be much appreciated.
EDIT: Changing the Declaration so it reads:
public class CustomComboBoxModel extends AbstractListModel<String>
instead of:
public class CustomComboBoxModel<String> extends AbstractListModel<String>
Appears to have gotten rid of the warning and error. I do not understand why however, as I have a Custom JList mode declared as such:
public class CustomListModel<String> extends javax.swing.DefaultListModel<String>
In the same package with no errors.
