如何从扫描仪获取输入到另一个 class 中我的私有变量字符串？

Question

这是我的第一个作业，如何从扫描仪获取输入到我在另一个 class 中的私有 viarable 字符串？

按照下面的描述创建作者class。（我已经完成了）
创建一个名为 TestAuthor 的测试 class 来测试 class Author 中的所有 public 方法。以下是输出的例子。

the questions

这是我的作者代码

package assignment1;

public class Author {
    
    //attribute of the class
    private String name;
    private String email;
    private char gender;
    
    
    //constructor
    public Author(String name, String email, char gender) {
        
        this.name = name;
        this.email = email;
        this.gender = gender;
    }
    
    //methods
    public String getName() {
        
        return name;
    }
    
    public String getEmail() {
        
        return email;
    }
    
    public void setEmail(String newEmail) {
        
        this.email = newEmail;
        
    }
    
    public char getGender() {
        
        return gender;
        
    }
    //method to get data from author object 
    public String toString() {
        
        return "Author[name="+name+", email="+email+", gender="+gender+"]";
                
    }   

}

这是我的测试作者我得到这个错误 'The method getName() in the type Author is not applicable for the arguments (String)'


package assignment1;

import java.util.Scanner;  // Import the Scanner class


public class TestAuthor {

    public static void main (String[] args) {
        
        
        //test constructor 
        Author newAuthor = new Author();
        
         Scanner input = new Scanner(System.in);
         System.out.println("Please enter name : ");
         String name = input.nextLine();
            newAuthor.getName(name);
            System.out.println("Name : "+newAuthor.getName());
        
    }
    
    
    
    
    
}

TIA

Answer 1

您需要为作者 class 中的名称属性添加 setter 方法，如下所示：

包分配1；

public class作者{

//attribute of the class
private String name;
private String email;
private char gender;


//constructor
public Author(String name, String email, char gender) {
    
    this.name = name;
    this.email = email;
    this.gender = gender;
}

//methods
public String getName() {
    
    return name;
}

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

public String getEmail() {
    
    return email;
}

public void setEmail(String newEmail) {
    
    this.email = newEmail;
    
}

public char getGender() {
    
    return gender;
    
}
//method to get data from author object 
public String toString() {
    
    return "Author[name="+name+", email="+email+", gender="+gender+"]";
            
}

}

在 TestAuthor class 中，您需要调用 setter 来设置值，然后像这样调用：

包分配1；导入 java.util.Scanner； // 导入扫描仪 class

public class 测试作者 {

public static void main (String[] args) {
     
    //test constructor 
    Author newAuthor = new Author();
    
     Scanner input = new Scanner(System.in);
     System.out.println("Please enter name : ");
     String name = input.nextLine();
        newAuthor.setName(name);
        System.out.println("Name : "+newAuthor.getName());
    
}

}

Answer 2

谢谢你的帮助，我得到了答案这是我的测试作者文件

package assignment1;

import java.util.Scanner;  // Import the Scanner class


public class TestAuthor {

    public static void main (String[] args) {
        
        //set variables()
        String name;
        String email;
        char gender;
        
        
        //Scanner input object
        Scanner input = new Scanner(System.in);
        
        
        //get user input
        System.out.println("Please enter Name : ");
        name= input.nextLine();
        
        System.out.println("Please enter Email : ");
        email= input.nextLine();
        
        System.out.println("Please enter Gender : ");
        gender= input.nextLine().charAt(0);
        
        
        //
        Author newAuthor = new Author(name,email,gender);
        name = newAuthor.getName();
        email = newAuthor.getEmail();
        gender = newAuthor.getGender();
        

        //output toString
        System.out.println(newAuthor.toString());
        
        
        //set new email
        System.out.println("Please change Email : ");
        String newEmail= input.nextLine();
        newAuthor.setEmail(newEmail);
        
        
        //output
        System.out.println("Name : "+newAuthor.getName());
        System.out.println("Email : "+newAuthor.getEmail());
        System.out.println("Gender : "+newAuthor.getGender());
        
        
    }
    
    
    
    
    
}

如何从扫描仪获取输入到另一个 class 中我的私有变量字符串？

how to get input from scanner to my private viarable string in another class?

java

java.util.scanner