How to convert JavaScript array into Java array

Question

I'm trying to rewrite some JavaScript logic found JavaScript functions. Could you please help me to put this JavaScript array in some Java compatible object so I could loop over all it's elemnets?

I need this as hardcoded array inside Java function.

The main problem for me is that it could contain arrays inside array.

this.contract = [
        ["ContractNetworkId",24],
        ["ContractProvider",8],
        ["ContractTariff",16],
        ["ContractSerialNumber",32],
        ["ContractCustomerInfoBitmap",2,[
            ["ContractCustomerProfile",6],
            ["ContractCustomerNumber",32]
        ]],
        ["ContractPassengerInfoBitmap",2, [
            ["ContractPassengerClass",8],
            ["ContractPassengerTotal",8]
        ]],
        ["ContractVehicleClassAllowed",6],
        ["ContractPaymentPointer",32],
        ["ContractPayMethod",11],
        ["ContractServices",16],
        ["ContractPriceAmount",16],
        ["ContractPriceUnit",16],
        ["ContractRestrictionBitmap",7,[
            ["ContractRestrictStart",11],
            ["ContractRestrictEnd",11],
            ["ContractRestrictDay",8],
            ["ContractRestrictTimeCode",8],
            ["ContractRestrictCode",8],
            ["ContractRestrictProduct",16],
            ["ContractRestrictLocation",16]
        ]].....

Answer 1

Make a new class to represent the complex object, since they all have a label and a value. Since one of their attributes can be a list of the same object you can add it as well.

Something like:

public class CustomObject{
    private String label;
    private int value;
    private List<CustomObject> coList;

    public CustomObject(String label, int value){
       this.label=label;
       this.value=value;
    }

    public CustomObject(String label, int value, List coList){
       this.label=label;
       this.value=value;
       this.coList=coList;
    }

    //getters and setters for the attributes

}

Then, create a List<CustomObject> myCustomObjList=new ArrayList<CustomObject>() in you data holder class in which you would add the elements:

myCustomObjList.add(new CustomObject("label",1)); //no list

final CustomObject obj2=new CustomObject("label2",2);
final List<CustomObject> tmpList=new ArrayList<CustomObject>();
tmpList.add(obj2);
myCustomObjList.add(new CustomObject("label",3,tmpList)); //CustomObject with a list

and so on...

You can then iterate the list to get the values as needed. Check the list attribute of each CustomObject for null first, if it's not null, iterate through it as well.

Example:

public static void main(String[] args) {
        final List<CustomObject> myCustomObjList = new ArrayList<CustomObject>();
        List<CustomObject> tmpList = new ArrayList<CustomObject>();

        myCustomObjList.add(new CustomObject("ContractNetworkId", 24));
        myCustomObjList.add(new CustomObject("ContractProvider", 8));
        myCustomObjList.add(new CustomObject("ContractTariff", 16));
        myCustomObjList.add(new CustomObject("ContractSerialNumber", 32));

        CustomObject obj1 = new CustomObject("ContractCustomerProfile", 6);
        CustomObject obj2 = new CustomObject("ContractCustomerNumber", 32);

        tmpList.add(obj1);
        tmpList.add(obj2);

        myCustomObjList.add(new CustomObject("ContractCustomerInfoBitmap", 2, tmpList));

        tmpList=new ArrayList<CustomObject>();

        obj1 = new CustomObject("ContractPassengerClass", 8);
        obj2 = new CustomObject("ContractPassengerTotal", 8);

        tmpList.add(obj1);
        tmpList.add(obj2);        

        myCustomObjList.add(new CustomObject("ContractPassengerInfoBitmap", 2, tmpList));

        for (CustomObject parent : myCustomObjList) {
            System.out.print(parent.getLabel()+" ; ");
            System.out.println(parent.getValue());

            if (parent.getCoList() != null) {
                for (CustomObject child : parent.getCoList()) {
                    System.out.print("  "+child.getLabel()+" ");
                    System.out.println(child.getValue());
                }
            }
            else{
                System.out.println(" Parent does not contain children");
            }
        }
        tmpList.clear();
    }

would produce the output:

ContractNetworkId ; 24
 Parent does not contain children
ContractProvider ; 8
 Parent does not contain children
ContractTariff ; 16
 Parent does not contain children
ContractSerialNumber ; 32
 Parent does not contain children
ContractCustomerInfoBitmap ; 2
  ContractCustomerProfile 6
  ContractCustomerNumber 32
ContractPassengerInfoBitmap ; 2
  ContractPassengerClass 8
  ContractPassengerTotal 8

Answer 2

Try this:

 public class Test {
    public static void main(String[] args) {
        ContractDetail[][] contractDetails = { { new ContractDetail(24, "ContractNetworkId") },
                { new ContractDetail(2, "ContractPassengerInfoBitmap") },
                { new ContractDetail(8, "ContractPassengerClass"), new ContractDetail(8, "ContractPassengerTotal") } };

        for (ContractDetail[] contractDetailsAryOuter : contractDetails) {
            for (ContractDetail contractDetailInnter : contractDetailsAryOuter) {
                System.out.println("Contract Property: " + contractDetailInnter.getId() + ";"
                        + contractDetailInnter.getContractProperty());
            }
        }
    }

}

class ContractDetail {
    private int id;
    private String contractProperty;

    public ContractDetail(int id, String contractProperty) {
        super();
        this.id = id;
        this.contractProperty = contractProperty;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getContractProperty() {
        return contractProperty;
    }

    public void setContractProperty(String contractProperty) {
        this.contractProperty = contractProperty;
    }
}