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public abstract class Car {
// This class includes common properties for a car, in this way we wont have to change if we need to add a new car brand
public String name;
public String colour;
public int model;
public String feature;
public String getFeature() {
return feature;
}
public void setFeature(String feature) {
this.feature = feature;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getColour() {
return colour;
}
public void setColour(String colour) {
this.colour = colour;
}
public int getModel() {
return model;
}
public void setModel(int model) {
this.model = model;
}
}
Test.java为什么toString方法在覆盖时不起作用?
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
CarFactory carfactory = new CarFactory();
System.out.println("Hello, please enter your car brand \n BMW \n MERCEDE \n OPEL");
Car usercar = null;
String usertext = input.nextLine();
usercar = carfactory.makeCar(usertext);
System.out.println("enter colour of your car");
usertext = input.nextLine();
usercar.setColour(usertext);
System.out.println("enter model of your car");
usertext =input.nextLine();
usercar.setModel(Integer.parseInt(usertext));
System.out.println("Your Car Information;\n "+ usercar.getName()+" \n Colour:" + usercar.getColour() + "\n Model "+ usercar.getModel()+ "\n Your car's plus point is " + usercar.getFeature());
}
的问题是,如果我要打印汽车信息与的toString梅托德,怎么会是谁?我写了一个在汽车类,但是它没有工作,特点是从汽车自身的类分配..
这里是我的toString梅托德
public String toString(){
return "Your Car Information;\n "+ getName()+" \n Colour:" + getColour() + "\n Model "+getModel()+ "\n Your car's plus point is " +getFeature();
}
请重新格式化您的代码 - 缩进每个代码行至少4个空格,否则几乎不可读。另外 - 你想要toString()做什么exacly? –
“*如果我想用toString Metod打印汽车信息,它将如何?*”您只需使用'System.our.println(yourCar)'。 'println'将在内部调用'toString'方法并使用它的结果。它类似于'System.our.println(yourCar.toString())' – Pshemo
“*如果我想用toString Metod打印汽车信息*” - 你的'toString'方法不应该打印任何东西。它应该简单地返回一个字符串。如果要打印该字符串,请使用@Pshemo建议的“System.out.println(carObject)”。 – aioobe