Java – fastvector type is not recommended

I tried to get an arrf extension output file from a multidimensional array in Java I imported the Weka library, but I received an error; Type fastvector < E > deprecated

What can I use instead of fastvector and how can I rewrite the following code?

import weka.core.FastVector; //Error: The type FastVector<E> is deprecated. 


    int [][] myArray = new int[45194][12541];

    for (int i = 0; i < myArray.length; i++) {
        for (int j = 0; j < myArray[0].length; j++) {
            System.out.print(myArray[i][j]+" "); 
        }
        System.out.println("");
    }

    int numAtts = myArray[0].length;
    FastVector atts = new FastVector(numAtts);
    for (int att = 0; att < numAtts; att++) {
        atts.addElement(new Attribute("Attribute" + att,att));
    }

    int numInstances = myArray.length;
    Instances dataset = new Instances("Dataset",atts,numInstances);
    for (int inst = 0; inst < numInstances; inst++) {
        dataset.add(new Instance(1.0,myArray[inst]));   //Error: Cannot instantiate the type Instance
    }

    BufferedWriter writer = new BufferedWriter(new FileWriter("test.arff"));
    writer.write(dataset.toString());
    writer.flush();
    writer.close();

Solution

Weka now uses typed ArrayLists in most places You can use ArrayList < attribute > to this:

ArrayList<Attribute> atts = new ArrayList<Attribute>();
    for (int att = 0; att < numAtts; att++) {
        atts.add(new Attribute("Attribute" + att,att));
    }