Question

免责声明：如果我错误地使用了这些条款，请注意。如果你能提供正确的术语（如果我错误地使用它们，那就太棒了！）

这是我的字段和构造函数的类：

double[] studentMathScores = {81.5,89.0,45.5,99.0,55.0,34.5,56.0,78.0,76.0,80.0};   
public StudentDashboard(double[] studentMathScores) 
    {
        this.studentMathScores = studentMathScores;
    }

如何使用studentMathScores在我的主类中声明一个对象？

StudentDashboard test = new StudentDashboard(studentMathScores);

`

Answer 1

我将开始使用OOP概念。

这就是宣言的完成方式：

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现在我通过为对象分配类的构造函数来初始化对象。还为构造函数提供了数组所需的参数：

StudentDashboard test;

现在每当我需要从这个对象使用这个数组时，这就是它的完成方式。

StudentDashboard test = new StudentDashboard(studentMathScores);

Answer 2

如果要保留当前的构造函数/类语法，则应在main方法中声明。

double[] studentMathScores = {81.5,89.0,45.5,99.0,55.0,34.5,56.0,78.0,76.0,80.0};

在这种情况下，studentMathScores中StudentDashboard的声明应该像double[] studentMathScores;

然后就这样：

public class Main { public static void main(String[] args) { double[] studentMathScores = {81.5,89.0,45.5,99.0,55.0,34.5,56.0,78.0,76.0,80.0}; StudentDashboard test = new StudentDashboard(studentMathScores); } }

如果可以更改类语法并且studentMathScores可以是静态的，则可以这样使用：

public class StudentDashboard {

static double[] studentMathScores ={81.5,89.0,45.5,99.0,55.0,34.5,56.0,78.0,76.0,80.0};

public StudentDashboard()
{
}

public static double[] getStudentMathScores() {
    return studentMathScores;
}

public class Main {

public static void main(String[] args) {
    StudentDashboard test = new StudentDashboard();
    double[] studentMathScores = StudentDashboard.getStudentMathScores();
}

}

使用字段中的参数调用双数组作为方法

2 个答案: