convert java code to matlab code

Hello,

I need to convert this code to matlab. I have no idea about java. could anyone help me please.

public class NextFit extends Packing {
	
	protected final boolean shouldDecrease = false;
	
	public NextFit(double[] items) {
		super(items);
	}

	@Override
	protected void pack(double item) {
		int binSize = this.bins.size();
		boolean canFit = binSize > 0 && this.bins.get(binSize - 1).remainingCapacity >= item;
		int binIndex = binSize - (canFit ? 1 : 0);
		this.addItem(item, binIndex);  
	}

	@Override
	protected boolean shouldDecrease() {
		return this.shouldDecrease;
	}

	
}

Thanks

Answer 1

[TED MOSBY]

Hi @nadia nadi,

I can give guidelines on things to keep in mind while converting you code:

• In MATLAB, classes are defined in separate files with the same name as the class. The file should be named NextFit.m.
• MATLAB does not use public, protected, or private keywords in the same way Java does. MATLAB uses properties and methods blocks to control access.
• MATLAB methods are defined within a methods block. The @Override annotation doesn't exist in MATLAB.
• MATLAB uses properties block to define class properties.

It should look something like this, feel free to adjust it accordingly:

classdef NextFit < Packing
    properties (Access = protected, Constant)
        shouldDecreaseFlag = false;
    end
    
    methods
        function obj = NextFit(items)
            obj@Packing(items); % Call the superclass constructor    
        end
        
        function pack(obj, item)
            binSize = numel(obj.bins);
            canFit = binSize > 0 && obj.bins{binSize}.remainingCapacity >= item;
            binIndex = binSize - (canFit * 1);
            obj.addItem(item, binIndex);
        end
        
        function result = shouldDecrease(obj)
            result = obj.shouldDecreaseFlag;
        end
    end
end

Here I changed the name of the property ‘shouldDecrease’ to ‘shouldDecreaseFlag’ to store the Boolean value and then returned that boolean value in the function ‘shouldDecrease’ inside the methods. I did this as we cannot write the property and the function with the same name in the same class in MATLAB as it creates ambiguity

Hope this helps!