#fixed code
                                @Override
    protected CommandLine processOptions(ObjectInspector[] argOIs) throws UDFArgumentException {
        CommandLine cl = super.processOptions(argOIs);
        if(cl == null) {
            this.eta0 = 0.1f;
            this.eps = 1.f;
            this.scaling = 100f;
        } else {
            this.eta0 = Primitives.parseFloat(cl.getOptionValue("eta0"), 0.1f);
            this.eps = Primitives.parseFloat(cl.getOptionValue("eps"), 1.f);
            this.scaling = Primitives.parseFloat(cl.getOptionValue("scale"), 100f);
        }
        return cl;
    }
#vulnerable code 
                                @Override
    protected CommandLine processOptions(ObjectInspector[] argOIs) throws UDFArgumentException {
        CommandLine cl = super.processOptions(argOIs);
        this.eta0 = Primitives.parseFloat(cl.getOptionValue("eta0"), 0.1f);
        this.eps = Primitives.parseFloat(cl.getOptionValue("eps"), 1.f);
        this.scaling = Primitives.parseFloat(cl.getOptionValue("scale"), 100f);
        return cl;
    } 
                            #location 4 
                            #vulnerability type NULL_DEREFERENCE