携帯電話オブジェクトを作成するために必要な新しいコンストラクタ オブジェクトをコードで作成しようとしています。オブジェクトを作成するために、コンストラクタ フィールドに名前を付けようとしました。
更新: に修正stringしましたがString、更新するとエラーが発生します:
error: constructor Mobile(java.lang.String,int,int,java.lang.String,int,java.lang.String) is already defined in class Mobile
このエラーは、次のページの下部に表示されます。
public Mobile(String MobilephoneType, int Mobilescreensize, int Mobilememorycardcapacity, String newserviceprovider, int Mobilecameraresolution,
String MobileGPS) {
このエラーはどういう意味ですか?
これまでのコード:
/**
* to write a simple java class Mobile that models a mobile phone.
*
* @author (Lewis Burte-Clarke)
* @version (14/10/13)
*/
public class Mobile
{
// type of phone
private String phonetype;
// size of screen in inches
private int screensize;
// menory card capacity
private int memorycardcapacity;
// name of present service provider
private String serviceprovider;
// type of contract with service provider
private int typeofcontract;
// camera resolution in megapixels
private int cameraresolution;
// the percentage of charge left on the phone
private int checkcharge;
// wether the phone has GPS or not
private String GPS;
// instance variables - replace the example below with your own
private int x;
// The constructor method
public Mobile(String mobilePhoneType, int mobileScreenSize,
int mobileMemoryCardCapacity, String newserviceprovider, int mobileCameraResolution,
String mobileGPS) {
this.phonetype = mobilePhonetype;
this.screensize = mobileScreensize;
this.memorycardcapacity = mobileMemoryCardCapacity;
this.cameraresolution = mobileCameraResolution;
this.GPS = mobileGPS;
// you do not use this ones during instantiation,you can remove them if you do not need or assign them some default values
this.serviceprovider = newserviceprovider;
this.typeofcontract = 12;
this.checkcharge = checkcharge;
}
// A method to display the state of the object to the screen
public void displayMobileDetails() {
System.out.println("phonetype: " + phonetype);
System.out.println("screensize: " + screensize);
System.out.println("memorycardcapacity: " + memorycardcapacity);
System.out.println("cameraresolution: " + cameraresolution);
System.out.println("GPS: " + GPS);
System.out.println("serviceprovider: " + serviceprovider);
System.out.println("typeofcontract: " + typeofcontract);
}
public Mobile(String MobilephoneType, int Mobilescreensize, int Mobilememorycardcapacity, String newserviceprovider, int Mobilecameraresolution,
String MobileGPS) {
this.phonetype = Mobilephonetype;
this.screensize = 3;
this.memorycardcapacity = 4;
this.cameraresolution = 8;
this.GPS = GPS;
this.serviceprovider = newserviceprovider;
this.typeofcontract = 12;
this.checkcharge = checkcharge;
}
}
class mymobile {
public static void main(String[] args) {
Mobile Samsung = new Mobile("Samsung", "3", "4", "8",
"GPS");
Mobile Blackberry = new Mobile("Blackberry", "3.", "4",
"8", "GPS");
Samsung.displayMobileDetails();
Blackberry.displayMobileDetails();
}
}