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使用参数调用Java构造函数_Java_Constructor_Compiler Errors - Fatal编程技术网

使用参数调用Java构造函数

使用参数调用Java构造函数,java,constructor,compiler-errors,Java,Constructor,Compiler Errors,我正在尝试使用以下两个参数调用Student.java中的构造函数: public class InheritanceDemo { public static void main(String[] args) { Student s = new Student(String SSname, int SSStudentID);} s.writeOutput(); } Student.java public class Student extends Person{ pu

我正在尝试使用以下两个参数调用Student.java中的构造函数:

public class InheritanceDemo {

public static void main(String[] args) {
    Student s = new Student(String SSname, int SSStudentID);}
    s.writeOutput();
}
Student.java

public class Student extends Person{
    public Student(String Sname, int SStudentID) {
        super(Sname);
        StudentID = SStudentID;
    }

    public void writeOutput() {
        System.out.println("Name:" + getName());
        System.out.println("StudentNumber:" + StudentID);
    }
Person.java

public Person() {
    name = "No name yet";       
} 
public Person (String initialName) {
    name = initialName;
}
public String getName() {
    return name;
}
这里,
Person.java
是基类,
Student.java
是子类。向我显示以下错误:

Multiple markers at this line (near `Student s = new Student(String SSname, int SSStudentID);`
    - Syntax error on token "int", delete this 
     token
    - SSStudentID cannot be resolved to a 
     variable
    - String cannot be resolved to a variable
    - Syntax error on token "SSname", delete 
     this token
如何解决此问题?

调用方法(或构造函数)时,应传递实际值或变量:

更改:

Student s = new Student(String SSname, int SSStudentID);
例如:

Student s = new Student("SomeName", 1234);
除此之外,我没有看到您在发布的代码中声明
StudentID
name
成员变量

您的
学生
课程应具备(除当前内容外):

您的
人员
类应具有(除当前内容外):


主函数中存在语法错误,需要在调用构造函数外部声明变量
SSname和SStudentID

执行以下操作

public static void main(String[] args)
{ Student s = new Student(String SSname, int SSStudentID);}
s.writeOutput();
}

public static void main(String[] args)
{ 
String SSname = "your_name";
int SSStudentID=10;
Student s = new Student(SSname,SSStudentID );}
s.writeOutput();
}

您的错误将会消失,谢谢。这帮了大忙。
public class Person {
    private String name;
}
public static void main(String[] args)
{ Student s = new Student(String SSname, int SSStudentID);}
s.writeOutput();
}

public static void main(String[] args)
{ 
String SSname = "your_name";
int SSStudentID=10;
Student s = new Student(SSname,SSStudentID );}
s.writeOutput();
}