Question

我是Java的新手，如果可以编写方法printMyProgress()而不在其中声明任何变量，我感兴趣(String name = "Nat"; int time=0;).

public class Q7 {
String getMyName() {
  String name = "Nat";
    return name;  
}
int getMyTimeSoFar() {
    int time=0;
    return time;
}

 void printStudentProgress(String name, int time) {
     String minute ="";
     if (time==0||time>1) 
     minute = "minutes";
     else minute = "minute";
     print (name + " took " +time+ " "+  minute+" to reach Q7 in the Exam");     
 }

   void printMyProgress() {
       String name = "Nat";
       int time=0;
       printStudentProgress(name, time);  
   }
}

Answer 1

是;像这样：

void printMyProgress() {
    printStudentProgress("Nat", 0);  
}

OR

void printMyProgress() {
    printStudentProgress(getMyName(), getTimeSoFar());  
}

Answer 2

public class Q7 {
    String getMyName() {
        return "Nat";  
    }
    int getMyTimeSoFar() {
        return 0;
    }

    void printStudentProgress(String name, int time) {
         String minute ="";
         if (time==0||time>1) 
          minute = "minutes";
         else 
          minute = "minute";
          System.out.println (name + " took " +time+ " "+  minute+" to reach Q7 in the Exam");     
    }

    void printMyProgress()
    {
     printStudentProgress(getMyName(), getMyTimeSoFar());  
    }

    public static void main(String [] args)
    {
       Q7 q7 = new Q7();

       q7.printMyProgress();
    }   
}

Answer 3

是的，可以编写此方法而不声明其中的任何变量。您可以在全球范围内声明变量：

public class Q7
{
    String name = "Nat";
    int time = 0;

    String getMyName()
    {
        return name;
    }

    int getMyTimeSoFar()
    {
        return time;
    }

    void printStudentProgress(String name, int time) 
    {
        String minute ="";

        if (time == 0 || time > 1) 
        {
            minute = "minutes";
        }
        else 
        {
            minute = "minute";
        }

        System.out.println(name + " took " + time + " " + minute + " to reach Q7 in the
            Exam");
    }

    void printMyProgress()
    {
        printStudentProgress(name, time);
    }
}

调用方法，它调用Java中的其他方法

3 个答案: