(预期的标识符)getter / setter和对象

时间:2014-11-24 00:30:33

标签: java object setter getter

我的程序出了问题。当我尝试编译以下我只是收到消息:

Tutorium.java:15: error: <identifier> expected
    public void settName(vorlesung.lectureName) {
                                              ^

所以我的代码:

Tutorium.java

public class Tutorium {
private Vorlesung vorlesung;
public String tName;
private int tNumber;


public int gettNumber() {
    return this.tNumber;
}

public String gettName() {
    return this.tName;
}

public void settName(vorlesung.lectureName) {
    this.tName = vorlesung.lectureName;
}

public String toString() {
    return (this.tName + ", " + this.tNumber);
}

public Tutorium(int tNumber){
    this.tNumber = tNumber; } }

Vorlesung.java

public class Vorlesung {
public String lectureName;
private int lectureNumber;
private int lecture;
private Dozent dozent;
private String lecturerlName;

public String getlectureName(){
    return this.lectureName;
}

public int lectureNumber(){
    return this.lectureNumber;
}

public int lecture(){
    return this.lecture;
}

public String getlecturer(){
    this.lecturerlName = dozent.lecturerlName;
    return this.lecturerlName;
}

public String toString() {
    return (this.lectureName + ", " + this.lectureNumber);
}

public Vorlesung(String lectureName, int lecture) {
    this.lectureName = lectureName;
    this.lecture = lecture +1;
    this.lectureNumber = this.lecture -1;
    this.lecturerlName = lecturerlName;
}}

我的主要方法:

public class MainVorlesung {
public static void main(String[] args) {
    Student student = new Student("STUDENTNAME", "STUDENTLASTNAME", 178, 1);
    Vorlesung vorlesung = new Vorlesung("Programmieren", 13341);
    Tutorium tutorium = new Tutorium(3);
    Dozent dozent = new Dozent("LECTURERFIRSTNAME", "LECTURERLASTNAME", 815);

    System.out.println(student.toString());
    System.out.println(vorlesung.toString());
    System.out.println(tutorium.toString());
    System.out.println(dozent.toString());

}}

我的目标是将tName的值设置为等于vorlesung.lectureName的值。

为什么我不这样做?

我感谢每一个帮助。 :) 感谢

3 个答案:

答案 0 :(得分:1)

对于方法,传入的参数必须具有声明的值。

在这种情况下,一个字符串。所以你需要改变你的方法:

public void settName(String newLectureName) {
    this.tName = newLectureName;
}

详细了解java方法以及如何在此创建方法:http://www.tutorialspoint.com/java/java_methods.htm

答案 1 :(得分:1)

将settName更改为

public void settName(String name) {
    this.tName = name;
}

答案 2 :(得分:0)

因为你的目标是:

  

我的目标是将tName的值设置为等于vorlesung.lectureName的值。

你应该完全摆脱setName方法,因为它完全取决于vorlesung字段,因此不应该是可更改的。您还应该删除tName字段,而是将getName()更改为:

public class Tutorium {
    private Vorlesung vorlesung;
    // public String tName;  // get rid of
    private int tNumber;



    public String gettName() {
        if (vorlesung != null) {
            return vorlesung.getlecturer();
        }

        return null; // or throw exception
    }

    // *** get rid of this since you won't be setting names
    // public void settName(Vorlesung vorlesung) {
    //     this.tName = vorlesung.lectureName;
    // }

我刚刚注意到你的Tutorium课程没有并且绝对需要setVorlesung(...)方法。

public void setVorlesung(Vorlesung vorlesung) {
    this.vorlesung = vorlesung;
}