JSF selectOneRadio function return value as itemValue. For loop to create selectItems

Question

I have 2 questions here for the code below.

The first one is, how can I have an itemValue in selectItem for my selectOneRadio as a return value from a function? I know this is working for a normal itemValue, if I put just "0", it shows up on the next page, but any of the getCaseValueByIndex() returns nothing.

My second question is, instead of listing each selectItem one by one, can i dynamically create them? What I was thinking is creating a function called getCasesCount which would return the size of the cases array (in this case, its 6) and then run a for loop like so:

for (int i = 0; i < casesCount; i++) {
    
}

So then what would happen is that would create the same code I have but dynamically so that If i added or removed items in my LinkedHashMap, the code would reflect those changes rather than crashing for an outofbounds or null pointer error.

index.xhtml




    
        

        

        Jadestar's PC Solutions
    

    


                Please choose your components.
                To be eligible for the system builder's discount, 
                    you must select at least  1  component from each category.
                


                #{CustomBuild.initialize()}
                Computer Case

responsePage.xhtml

CustomBuild.java

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package Part1;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.Map;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.context.FacesContext;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Administrator
 */
@ManagedBean(name = "CustomBuild")
@SessionScoped
public class CustomBuild implements Serializable {

    LinkedHashMap  cases = new LinkedHashMap();

    String chosenCase;

    public String getChosenCase() {
        return chosenCase;
    }

    public void setChosenCase(String chosenCase) {
        this.chosenCase = chosenCase;
    }

    public float getCaseValueByKeyFloat(String key) {
    float caseValueByValue = Float.parseFloat(cases.get(key));
    return caseValueByValue;
}

public String getCaseKeyByIndex(int index) {

    Object newKey = cases.keySet().toArray()[index];
    //String tempKey = getCaseValueByIndex(index);
    //String newKey = getCaseKeyByValue(tempKey);
    return newKey.toString();
}

public String getCaseValueByIndex(int index) {
    String caseValue = (new ArrayList(cases.values())).get(index);
    return caseValue;
}

    public void initialize() {
        cases.put("59.95" ,"Eleo 500 $59.95");
        cases.put("79.95" ,"Eleo 700 $79.95");
        cases.put("99.95" ,"Star Maker $99.95");
        cases.put("104.95" ,"Anzooc 1200 $104.95");
        cases.put("119.95" ,"Eleo 900 $119.95");
        cases.put("139.95" ,"Criticase 1000 $139.95");
    }

    public CustomBuild() {
        System.out.println("Custom Computer");

    }
}

JSF selectOneRadio function return value as itemValue. For loop to create selectItems

Answers (1)

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