检索发生组件类型的数组错误时未发生类型加载

Question

我有以下代码.

Complex[] time1Dummy = new Complex[time1.size()];
Complex[] freq1 = new Complex[time1.size()];
System.out.println("Size of time1:" +time1.size());

for(int i = 0; i < time1.size(); i++) {
    time1Dummy[i].setRe(time1.get(i));
    time1Dummy[i].setIm(0.00);
}

在这里,Complex是包含的类

private static Double re;   // the real part
private static Double im;   // the imaginary part`

在这里,我试图将数组列表time1中的值赋给复值函数.

我在eclipse 4.3.2中运行此代码.有人可以帮我解决这个问题吗？

Answer 1

我的猜测是你得到空指针异常？请参阅我在for循环中添加的第一行(假设Complex有一个默认构造函数).

Complex[] time1Dummy = new Complex[time1.size()];
Complex[] freq1 = new Complex[time1.size()];
System.out.println("Size of time1:" +time1.size());

for(int i = 0; i < time1.size(); i++) {
    time1Dummy[i] = new Complex();
    time1Dummy[i].setRe(time1.get(i));
    time1Dummy[i].setIm(0.00);
}

代码的前两行创建了Complex对象的数组,但每个元素还没有在其中创建对象.您需要先显式创建一个对象.

属性也不应该是静态的:

private Double re;   // the real part
private Double im;   // the imaginary part`