java.lang.VerifyError :(类:ea/Individual,方法:<init>签名:(I)V)构造函数必须调用super()或this()

Question

我没有在这个课程中发现任何错误,但Netbeans在该课程上不断显示红色符号.上课是

/*
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 * and open the template in the editor.
 */
package ea;

/**
 *
 * @author riyad
 */

import java.util.Random;
import java.util.BitSet;

public class Individual 
{
    BitSet variable;

    double x;
    double fitness;
    double sharedFitness;
    final int SIZE;


    Random generator = new Random();

    public Individual(int SIZE)
    {
        this.variable = new BitSet(SIZE);
        this.fitness = 0;
        this.sharedFitness = 0;
        this.SIZE = SIZE;


        for(int i=0; i<SIZE; i++)
        {
            if(generator.nextBoolean())
            {
                variable.set(i);
            }
            else
            {
                variable.clear(i);
            }
        }

        x = Double.parseDouble(variable.toString());
    }


    public Individual copy()
    {
        Individual ind = new Individual(SIZE);

        this.variable = (BitSet) ind.variable.clone();
        this.fitness = ind.fitness;
        this.sharedFitness = ind.sharedFitness;
        this.x = ind.x;

        return ind;
    }

    public void evaluate()
    {
        fitness = x * Math.sin(Math.sqrt(x));
    }

    public boolean getBit(int i)
    {
        return variable.get(i);
    }

    public BitSet getBitSet()
    {
        return variable;
    }

    public void setBit(int i)
    {
        variable.set(i);
    }

    public void clearBit(int i)
    {
        variable.clear(i);
    }

    public double getFitness()
    {
        return fitness;
    }

    public double sharedFitness()
    {
        return sharedFitness;
    }

    public void setSharedFitness(double fitness)
    {
        this.sharedFitness = fitness;
    }

    public void setFitness(double fitness)
    {
        this.fitness = fitness;
    }
}

代码正在编译但却出现运行时错误.

Exception in thread "main" java.lang.VerifyError: (class: ea/Individual, method: <init> signature: (I)V) Constructor must call super() or this()

在另一个类中,使用Individual类:

ArrayList<Individual> pop = new ArrayList<Individual>();

这是个人类被实例化的地方:

Individual temp = new Individual(STRING_SIZE);
pop.add(temp);

编辑

我没有手动重命名该文件.所有编码都是在Netbeans中完成的.唯一的问题是当我创建Individual的实例时.

EDIT2

我已将项目复制到另一个地方,一切正常.可能是Netbeans或JDK的错误

Answer 1

您应该javap使用.class文件并检查编译器是否在构造函数的开头附近生成了对super()的调用.

JVM验证程序要求任何构造函数(当然不是对象)调用(可能通过另一个构造函数间接)它是超类的构造函数.通常情况下,如果你不这样做,编译器会自动插入对超类构造函数的调用,但是在某些情况下可能会混淆不执行此操作(尽管提供的代码看起来并不复杂).

(而且,是的,你已经this和ind大多数地方交换了copy.)