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[英]Java: I keep getting an error when trying to call the shooterExperiments method. I'm not sure what I'm doing wrong or exactly how to call a method
[英]I keep getting an error in my driver class, but I'm not sure what I've done wrong
這是我目前正在研究的基礎課程的代碼。 我不斷收到錯誤消息,但我不確定我做錯了什么。 任何幫助將不勝感激。 謝謝!
package miles;
public class Miles {
private int miles;
private int gas;
public static int mpg;
public void setMiles(int miles) {
this.miles = miles;
}
public void setGas(int gas){
this.gas = gas;
}
public int getMpg(){
mpg = miles/gas;
return mpg;
}
}
package miles;
import java.util.Scanner;
public class MilesDriver {
public static void main(String [] args) {
Miles gas = new Miles();
Scanner input = new Scanner(System.in);
System.out.println("Enter Miles: ");
int setGas = input.nextInt();
System.out.println("Enter Gas: ");
int setMiles = input.nextInt();
System.out.printf("MPG: %n%s%n", gas.getMpg() );
}
}
您實際上忘記設置對象的值:
System.out.println("Enter Miles: ");
int setMiles = input.nextInt();
gas.setMiles(setMiles);
System.out.println("Enter Gas: ");
int setGas = input.nextInt();
gas.setGas(setGas);
盡量不要給變量名與對象的方法同名。 你最終會迷惑自己並陷入困境。
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