Question

我是java的新手，我有一个关于使用计时器进行测验的项目，但这不是我要问的问题，因为我正在努力自己创建这个项目，但是这个“静态”错误我认为这是阻碍我从我的代码中得到我想要的东西，我尝试使用google搜索我想要做的事情的许多方法，这是我最终制作的代码，只是不介意逻辑或我的代码，它只是我的代码充满了静态，我尝试删除它们除了我的主要方法之外的所有，但我只是从它得到错误，请帮助我或指导我我需要做什么来删除静态。谢谢

import java.util.Timer;
import java.util.TimerTask;
import java.util.Scanner;
import java.io.IOException;
public class q2 {
static int seconds = 0; 
static Scanner a=new Scanner(System.in);
static Timer timer = new Timer();
static int number = 1;
static int score = 0;
public static void mema(){
    TimerTask task = new TimerTask () 
{
    public void run() 
    {
        seconds++;
        System.out.print(seconds);


}
};

timer.schedule(task,1000,1000);
}   

public static void tanong1(String... args)throws IOException,InterruptedException
{  
System.out.println("");
System.out.printf("%72s\n","QUIZ FOR PHILIPPINE HISTORY");
System.out.println("");
System.out.printf("%64s\n","Question #1");
System.out.println("");
System.out.println("\t\t\t\t\t     WHO DISCOVERED PHILIPPINES?");
System.out.println("\n\t\t\t\t\t\tA. Fernando Magellan");
System.out.println("\t\t\t\t\t\tB. Ferdinand Megallan");
System.out.println("\t\t\t\t\t\tC. Ferdinand Magellan");
System.out.println("\t\t\t\t\t\tD. Fernando Poe");

System.out.println("\n\t\t\t\t\t\tTYPE YOU ANSWER HERE: "); 
char sagot1 = a.nextLine().charAt(0);   
        switch (sagot1)
        {
            case 'B':
            case 'b':
                score++;    
                seconds=30;
                System.out.print("You are CORRECT!");
                Thread.sleep(3000);
                break;
                default:
                System.out.print("You are WRONG");
                seconds=30;
                Thread.sleep(3000);
                break;

        }

}

public static void tanong2(String... args)throws IOException,InterruptedException
{  
System.out.println("");
System.out.printf("%72s\n","QUIZ FOR PHILIPPINE HISTORY");
System.out.println("");
System.out.printf("%64s\n","Question #2");
System.out.println("");
System.out.println("\t\t\t\t\t     WHO DISCOVERED PHILIPPINES?");
System.out.println("\n\t\t\t\t\t\tA. Fernando Magellan");
System.out.println("\t\t\t\t\t\tB. Ferdinand Megallan");
System.out.println("\t\t\t\t\t\tC. Ferdinand Magellan");
System.out.println("\t\t\t\t\t\tD. Fernando Poe");

System.out.println("\n\t\t\t\t\t\tTYPE YOU ANSWER HERE: ");
char sagot2 = a.nextLine().charAt(0);
        switch (sagot2)
        {
            case 'B':
            case 'b':
                score++;
                seconds=60;
                System.out.print("You are CORRECT!");
                break;
            default:
                System.out.print("You are WRONG");
                seconds=60;
                break;
        }
}

public static void main(String... args)throws IOException,InterruptedException
{  
mema();
while(seconds<=5){
    tanong1();
        }
while(seconds<=60||seconds>=6){
    new ProcessBuilder("cmd","/c","cls").inheritIO().start().waitFor();
    tanong2();
}


}
}

这是我遇到的错误，以防我删除我的秒变量上的静态错误：无法从静态上下文引用非静态变量秒。我只是想知道我该做什么，谢谢你的进步。

Answer 1

为了删除静态，我将整个代码移动到内部类中并以这种方式执行它。

代码：

import java.util.Timer;
import java.util.TimerTask;
import java.util.Scanner;
import java.io.IOException;

public class q2 {

    public static void main(String... args) {
    new q2().new quiz();
    }

    private class quiz {

    private int seconds = 0;

    private Scanner a = new Scanner(System.in);

    private Timer timer = new Timer();

    private int number = 1;

    private int score = 0;

    quiz() {
        mema();
        while (seconds <= 5) {
        tanong1();
        }
        while (seconds <= 60 || seconds >= 6) {
        try {
            new ProcessBuilder("cmd", "/c", "cls").inheritIO().start()
                .waitFor();
        } catch (Exception e) {
            e.printStackTrace();
        }
        tanong2();
        }
    }

    public void mema() {
        TimerTask task = new TimerTask() {

        public void run() {
            seconds++;
            System.out.print(seconds);

        }
        };

        timer.schedule(task, 1000, 1000);
    }

    public void tanong1(String... args) {
        System.out.println("");
        System.out.printf("%72s\n", "QUIZ FOR PHILIPPINE HISTORY");
        System.out.println("");
        System.out.printf("%64s\n", "Question #1");
        System.out.println("");
        System.out.println("\t\t\t\t\t     WHO DISCOVERED PHILIPPINES?");
        System.out.println("\n\t\t\t\t\t\tA. Fernando Magellan");
        System.out.println("\t\t\t\t\t\tB. Ferdinand Megallan");
        System.out.println("\t\t\t\t\t\tC. Ferdinand Magellan");
        System.out.println("\t\t\t\t\t\tD. Fernando Poe");

        System.out.println("\n\t\t\t\t\t\tTYPE YOU ANSWER HERE: ");
        char sagot1 = a.nextLine().charAt(0);
        switch (sagot1) {
        case 'B':
        case 'b':
        score++;
        seconds = 30;
        System.out.print("You are CORRECT!");
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        break;
        default:
        System.out.print("You are WRONG");
        seconds = 30;
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        break;

        }

    }

    public void tanong2(String... args) {
        System.out.println("");
        System.out.printf("%72s\n", "QUIZ FOR PHILIPPINE HISTORY");
        System.out.println("");
        System.out.printf("%64s\n", "Question #2");
        System.out.println("");
        System.out.println("\t\t\t\t\t     WHO DISCOVERED PHILIPPINES?");
        System.out.println("\n\t\t\t\t\t\tA. Fernando Magellan");
        System.out.println("\t\t\t\t\t\tB. Ferdinand Megallan");
        System.out.println("\t\t\t\t\t\tC. Ferdinand Magellan");
        System.out.println("\t\t\t\t\t\tD. Fernando Poe");

        System.out.println("\n\t\t\t\t\t\tTYPE YOU ANSWER HERE: ");
        char sagot2 = a.nextLine().charAt(0);
        switch (sagot2) {
        case 'B':
        case 'b':
        score++;
        seconds = 60;
        System.out.print("You are CORRECT!");
        break;
        default:
        System.out.print("You are WRONG");
        seconds = 60;
        break;
        }
    }
    }
}

在java上遇到静态错误问题

1 个答案: