Java 后编译错误，检查控制台？_Java_Class_Compiler Errors_Console

Java 后编译错误，检查控制台？

java class compiler-errors

Java 后编译错误，检查控制台？,java,class,compiler-errors,console,Java,Class,Compiler Errors,Console,错误消息与实际代码一起发布在下面。代码可以编译和运行，但不是在最后打印，而是收到一条弹出的错误消息（下面的屏幕截图），但我不明白这是什么意思，也不明白为什么会得到它。有人能帮忙吗？谢谢 public class Employee10 { public static void main ( String args[] ) { Employee e1 = new Employee(); Employee[] arr = new Employee[

错误消息与实际代码一起发布在下面。代码可以编译和运行，但不是在最后打印，而是收到一条弹出的错误消息（下面的屏幕截图），但我不明白这是什么意思，也不明白为什么会得到它。有人能帮忙吗？谢谢

public class Employee10
{   
    public static void main ( String args[] )
    {
        Employee e1 = new Employee();
        Employee[] arr = new Employee[2];

        int j = 0;

        for ( int i=0; i < 3; i++)
        {
            arr[0] = e1;

            String nameF = Input.getString("Please enter a First Name");
            String nameL = Input.getString("Please enter a Last Name");
            int Number = Input.getInt("Please enter an Employee Number");
            String Street = Input.getString("Please enter a Street address");
            String City = Input.getString("Please enter a City");
            String State = Input.getString("Please enter a State");
            double Zip = Input.getDouble("Please enter a Zip Code"); 
            int Month = Input.getInt("Please enter a Month");
            int Day = Input.getInt("Please enter a Day");
            int Year = Input.getInt("Please enter a Year");

            e1.setNumber(Number);
            e1.setName( new Name(nameF, nameL));
            e1.setAddress(new Address(Street, City, State, Zip));
            e1.setHireDate(new Date(Month, Day, Year));

            System.out.println(e1.getEmployeeString());


            arr[i] = e1;

        }   

        for ( j=0; j < arr.length; j++ )
        {
            System.out.println( arr[j].getEmployeeString() );
        }   
    }
}

公共类员工10
{   
公共静态void main（字符串参数[]）
{
员工e1=新员工（）；
员工[]arr=新员工[2]；
int j=0；
对于（int i=0；i<3；i++）
{
arr[0]=e1；
String nameF=Input.getString（“请输入名字”）；
String nameL=Input.getString（“请输入姓氏”）；
int Number=Input.getInt（“请输入员工编号”）；
String Street=Input.getString（“请输入街道地址”）；
String City=Input.getString（“请输入一个城市”）；
String State=Input.getString（“请输入状态”）；
double Zip=Input.getDouble（“请输入邮政编码”）；
int Month=Input.getInt（“请输入一个月”）；
int Day=Input.getInt（“请输入一天”）；
int Year=Input.getInt（“请输入年份”）；
e1.设置编号（编号）；
e1.设置名称（新名称（nameF，nameL））；
e1.设置地址（新地址（街道、城市、州、邮政编码））；
e1.设定日期（新日期（月、日、年））；
System.out.println（e1.getEmployeeString（））；
arr[i]=e1；
}   
对于（j=0；j


错误消息：
（不幸的是，我无法嵌入照片，因此我只需键入代码即可）：
public class Employee10
{   
    public static void main ( String args[] )
    {
        Employee e1 = new Employee();
        Employee[] arr = new Employee[2];

        int j = 0;

        for ( int i=0; i < 3; i++)
        {
            arr[0] = e1;

            String nameF = Input.getString("Please enter a First Name");
            String nameL = Input.getString("Please enter a Last Name");
            int Number = Input.getInt("Please enter an Employee Number");
            String Street = Input.getString("Please enter a Street address");
            String City = Input.getString("Please enter a City");
            String State = Input.getString("Please enter a State");
            double Zip = Input.getDouble("Please enter a Zip Code"); 
            int Month = Input.getInt("Please enter a Month");
            int Day = Input.getInt("Please enter a Day");
            int Year = Input.getInt("Please enter a Year");

            e1.setNumber(Number);
            e1.setName( new Name(nameF, nameL));
            e1.setAddress(new Address(Street, City, State, Zip));
            e1.setHireDate(new Date(Month, Day, Year));

            System.out.println(e1.getEmployeeString());


            arr[i] = e1;

        }   

        for ( j=0; j < arr.length; j++ )
        {
            System.out.println( arr[j].getEmployeeString() );
        }   
    }
}

无法启动Java类文件“Employee10.class”。检查
控制台将显示可能的错误消息
public class Employee10
{   
    public static void main ( String args[] )
    {
        Employee e1 = new Employee();
        Employee[] arr = new Employee[2];

        int j = 0;

        for ( int i=0; i < 3; i++)
        {
            arr[0] = e1;

            String nameF = Input.getString("Please enter a First Name");
            String nameL = Input.getString("Please enter a Last Name");
            int Number = Input.getInt("Please enter an Employee Number");
            String Street = Input.getString("Please enter a Street address");
            String City = Input.getString("Please enter a City");
            String State = Input.getString("Please enter a State");
            double Zip = Input.getDouble("Please enter a Zip Code"); 
            int Month = Input.getInt("Please enter a Month");
            int Day = Input.getInt("Please enter a Day");
            int Year = Input.getInt("Please enter a Year");

            e1.setNumber(Number);
            e1.setName( new Name(nameF, nameL));
            e1.setAddress(new Address(Street, City, State, Zip));
            e1.setHireDate(new Date(Month, Day, Year));

            System.out.println(e1.getEmployeeString());


            arr[i] = e1;

        }   

        for ( j=0; j < arr.length; j++ )
        {
            System.out.println( arr[j].getEmployeeString() );
        }   
    }
}

这一切意味着什么？我可以检查的控制台在哪里？
TL；DR：控制台取决于您运行代码所使用的软件（我们称之为集成开发环境或IDE）。如果你告诉我们你在用什么软件，我们可以帮你
public class Employee10
{   
    public static void main ( String args[] )
    {
        Employee e1 = new Employee();
        Employee[] arr = new Employee[2];

        int j = 0;

        for ( int i=0; i < 3; i++)
        {
            arr[0] = e1;

            String nameF = Input.getString("Please enter a First Name");
            String nameL = Input.getString("Please enter a Last Name");
            int Number = Input.getInt("Please enter an Employee Number");
            String Street = Input.getString("Please enter a Street address");
            String City = Input.getString("Please enter a City");
            String State = Input.getString("Please enter a State");
            double Zip = Input.getDouble("Please enter a Zip Code"); 
            int Month = Input.getInt("Please enter a Month");
            int Day = Input.getInt("Please enter a Day");
            int Year = Input.getInt("Please enter a Year");

            e1.setNumber(Number);
            e1.setName( new Name(nameF, nameL));
            e1.setAddress(new Address(Street, City, State, Zip));
            e1.setHireDate(new Date(Month, Day, Year));

            System.out.println(e1.getEmployeeString());


            arr[i] = e1;

        }   

        for ( j=0; j < arr.length; j++ )
        {
            System.out.println( arr[j].getEmployeeString() );
        }   
    }
}

长答覆：
通常有两种错误-编译时错误和运行时错误。编译时错误通常由IDE告知您。这些问题包括拼写错误的关键字（“itn”代替“int”，“tSring”代替“String”，等等）和缺少分号。运行时错误是另一回事。当您的程序实际运行时会发生这些情况。一个例子是假设您有一个大小为10的数组。如果您尝试查看第十一个元素，当您运行程序时，它将失败。这些错误通常以堆栈跟踪的形式出现在控制台中—一些消息告诉您调用了哪些函数以及具体错误来自何处。
如果您使用的是非常基本的IDE
如BlueJ
（因为您是初学者），我建议您放置类似于System.out.println（“开始程序”）的东西
public class Employee10
{   
    public static void main ( String args[] )
    {
        Employee e1 = new Employee();
        Employee[] arr = new Employee[2];

        int j = 0;

        for ( int i=0; i < 3; i++)
        {
            arr[0] = e1;

            String nameF = Input.getString("Please enter a First Name");
            String nameL = Input.getString("Please enter a Last Name");
            int Number = Input.getInt("Please enter an Employee Number");
            String Street = Input.getString("Please enter a Street address");
            String City = Input.getString("Please enter a City");
            String State = Input.getString("Please enter a State");
            double Zip = Input.getDouble("Please enter a Zip Code"); 
            int Month = Input.getInt("Please enter a Month");
            int Day = Input.getInt("Please enter a Day");
            int Year = Input.getInt("Please enter a Year");

            e1.setNumber(Number);
            e1.setName( new Name(nameF, nameL));
            e1.setAddress(new Address(Street, City, State, Zip));
            e1.setHireDate(new Date(Month, Day, Year));

            System.out.println(e1.getEmployeeString());


            arr[i] = e1;

        }   

        for ( j=0; j < arr.length; j++ )
        {
            System.out.println( arr[j].getEmployeeString() );
        }   
    }
}

或者类似的在控制台上打印内容的东西。将此作为main
中的第一条语句。现在console可以被视为显示输出语句的地方（原始定义）。可以被视为显示窗口。
早在我学习java的时候，我就使用了BlueJ
，直到控制台上有打印的东西时，它才触发程序。它总是首先寻找打印语句
public class Employee10
{   
    public static void main ( String args[] )
    {
        Employee e1 = new Employee();
        Employee[] arr = new Employee[2];

        int j = 0;

        for ( int i=0; i < 3; i++)
        {
            arr[0] = e1;

            String nameF = Input.getString("Please enter a First Name");
            String nameL = Input.getString("Please enter a Last Name");
            int Number = Input.getInt("Please enter an Employee Number");
            String Street = Input.getString("Please enter a Street address");
            String City = Input.getString("Please enter a City");
            String State = Input.getString("Please enter a State");
            double Zip = Input.getDouble("Please enter a Zip Code"); 
            int Month = Input.getInt("Please enter a Month");
            int Day = Input.getInt("Please enter a Day");
            int Year = Input.getInt("Please enter a Year");

            e1.setNumber(Number);
            e1.setName( new Name(nameF, nameL));
            e1.setAddress(new Address(Street, City, State, Zip));
            e1.setHireDate(new Date(Month, Day, Year));

            System.out.println(e1.getEmployeeString());


            arr[i] = e1;

        }   

        for ( j=0; j < arr.length; j++ )
        {
            System.out.println( arr[j].getEmployeeString() );
        }   
    }
}

最奇怪的是，在main
函数中，它从不需要字符串数组作为参数。当我切换到eclipse时，我感到惊讶，因为没有main
中的参数，程序无法编译。因此，一些非常基本的IDE
可能会让事情变得奇怪
public class Employee10
{   
    public static void main ( String args[] )
    {
        Employee e1 = new Employee();
        Employee[] arr = new Employee[2];

        int j = 0;

        for ( int i=0; i < 3; i++)
        {
            arr[0] = e1;

            String nameF = Input.getString("Please enter a First Name");
            String nameL = Input.getString("Please enter a Last Name");
            int Number = Input.getInt("Please enter an Employee Number");
            String Street = Input.getString("Please enter a Street address");
            String City = Input.getString("Please enter a City");
            String State = Input.getString("Please enter a State");
            double Zip = Input.getDouble("Please enter a Zip Code"); 
            int Month = Input.getInt("Please enter a Month");
            int Day = Input.getInt("Please enter a Day");
            int Year = Input.getInt("Please enter a Year");

            e1.setNumber(Number);
            e1.setName( new Name(nameF, nameL));
            e1.setAddress(new Address(Street, City, State, Zip));
            e1.setHireDate(new Date(Month, Day, Year));

            System.out.println(e1.getEmployeeString());


            arr[i] = e1;

        }   

        for ( j=0; j < arr.length; j++ )
        {
            System.out.println( arr[j].getEmployeeString() );
        }   
    }
}

我建议您尝试这个解决方案，并尝试使用一个好的IDE
，比如eclipse
或netbeans
。这些IDE
非常专业，可以让您对程序中出现的错误有一个即时的好主意。
您是如何编译和运行代码的？您是哪个IDE使用？.Eclipse、BlueJ等。您确定您正在运行Employee10
并且没有尝试运行Employee10.class？我正在使用Mac（软件上当前最新的版本），并且正在使用终端运行我的代码
public class Employee10
{   
    public static void main ( String args[] )
    {
        Employee e1 = new Employee();
        Employee[] arr = new Employee[2];

        int j = 0;

        for ( int i=0; i < 3; i++)
        {
            arr[0] = e1;

            String nameF = Input.getString("Please enter a First Name");
            String nameL = Input.getString("Please enter a Last Name");
            int Number = Input.getInt("Please enter an Employee Number");
            String Street = Input.getString("Please enter a Street address");
            String City = Input.getString("Please enter a City");
            String State = Input.getString("Please enter a State");
            double Zip = Input.getDouble("Please enter a Zip Code"); 
            int Month = Input.getInt("Please enter a Month");
            int Day = Input.getInt("Please enter a Day");
            int Year = Input.getInt("Please enter a Year");

            e1.setNumber(Number);
            e1.setName( new Name(nameF, nameL));
            e1.setAddress(new Address(Street, City, State, Zip));
            e1.setHireDate(new Date(Month, Day, Year));

            System.out.println(e1.getEmployeeString());


            arr[i] = e1;

        }   

        for ( j=0; j < arr.length; j++ )
        {
            System.out.println( arr[j].getEmployeeString() );
        }   
    }
}