使用自定义布局时，必需的true属性不适用于p：selectOneRadio

Question

我正在使用6.1版本的PrimeFaces社区。使用从PrimeFaces selectoneradio页面复制的以下代码，我尝试将所有选择发送出去，并且没有给出任何错误。当我将版本升级到7.0时，它给出了错误，要求true必须正常工作，但是我必须保留6.1版本。

在PrimeFaces 6.1上，此场景有任何错误吗？还是在PrimeFaces 6.1上有其他用途可达到我的目的？

import java.util.Scanner;

public class TestEquation {

    public static void main(String[] args) {
    Scanner input = new Scanner(System.in);
    QuadraticEquation Quadratic = new QuadraticEquation();



        System.out.println("Please enter the values of the following variables: ");

        System.out.println("a: ");
        Quadratic.setA(input.nextDouble());

        System.out.println("b: ");
        Quadratic.setB(input.nextDouble());

        System.out.println("c: ");
        Quadratic.setC(input.nextDouble());

        if (Quadratic.getDiscriminant() < 0) {

            System.out.println("The equation has the following roots:");

            System.out.println("The first one is " + Quadratic.getRoot1());

            System.out.println("The second one is " + Quadratic.getRoot2());


        }
        else if (Quadratic.getDiscriminant() == 0) { 
            System.out.println("The equation has one root:");

            System.out.println(Quadratic.getRoot1());

        }

        else {

        System.out.println("The equation has the no real roots");

        return;

        }
    }

}