Java 不包含主类型；雅特泽

因此，我正在处理这段代码，我不会包括所有的文件，但是有一个Yahtzee.java文件、DiePanel.java、ScorePanel.java和YahtzeeHand.java文件，它们都没有main（）方法。我得到启动错误，选择不包含主类型。我觉得它无论如何都应该可以运行？我错过了什么

import java.awt.*;
import javax.swing.*;
import java.util.*;

// -----------------------------
//  The GraphicalYahtzee class
// -----------------------------

class GraphicalYahtzee extends JFrame {

  // --------------------------
  //  class-oriented data 
  // --------------------------

  static final int 
    FRAME_WIDTH = 600, FRAME_HEIGHT = 600,
    SCORE_LEFT_MARGIN = 50, SCORE_TOP_MARGIN = 50,
    SCORE_WIDTH = 220, SCORE_HEIGHT = 320,
    DICE_LEFT_MARGIN = 50, DICE_TOP_MARGIN = 400, 
    DICE_WIDTH = 38, DICE_HEIGHT = 38,
    DICE_BORDER = 2, DICE_PADDING = 5;

  // --------------------------
  //  object-oriented data 
  // --------------------------

  // the content pane associated with the JFrame
  Container cPane;

  // the Yahtzee game
  Yahtzee yahtz;

  // an array of panels constituting the DICE
  DiePanel[] dice = new DiePanel[5];

  // the panel for displaying the scores
  ScorePanel scorePanel;


  /*EDDDITTT*////

   public static void main( String []args){

  }
  // -----------------------
  //   constructor
  // -----------------------
  GraphicalYahtzee() {

    this.yahtz = new Yahtzee();

    // set the size of the onscreen window
    this.setSize(FRAME_WIDTH, FRAME_HEIGHT);
    this.setTitle("GRAPHICAL YAHTZEE!");
    // get a reference to the "content pane" from the JFrame
    //   store it in the "cPane" field
    this.cPane = this.getContentPane();
    // tell the "content pane" that we will provide absolute
    //   coordinates for all panels to be added to it
    this.cPane.setLayout(null);

    this.scorePanel = new ScorePanel(yahtz);
    // specify the location and size of the scorePanel
    this.scorePanel.setBounds(SCORE_LEFT_MARGIN,
                              SCORE_TOP_MARGIN,
                              SCORE_WIDTH,
                              SCORE_HEIGHT);
    // ask the "contentPane" to add the new scorePanel
    //    to its contents.
    this.cPane.add(this.scorePanel);

    // set up the DICE panels
    for (int i=0; i<5; i++) {
      // create a new DiePanel 
      this.dice[i] = new DiePanel(yahtz, i);
      // specify the location and size of the new panel
      int topLeft = DICE_LEFT_MARGIN
        + i*(DICE_WIDTH + DICE_BORDER + DICE_PADDING);
      this.dice[i].setBounds(topLeft, DICE_TOP_MARGIN,
                             DICE_WIDTH, DICE_HEIGHT);
      // ask the "contentPane" to add the new panel to
      //   its contents.
      this.cPane.add(this.dice[i]);
    }

    // Make the JFrame visible
    this.setVisible(true);

    // call the playGame function!
    this.playGame();
  }

  // getValidCategory

  int getValidCategory() {
    // set up connection to keyboard
    Scanner sc = new Scanner(System.in);
    // kat will eventually hold the category entered by the player
    int kat = 0;
    // need is a boolean variable that governs the while loop
    boolean need = true;
    while (need) {
      // prompt the user to type something
      System.out.println("Enter a category to score your hand!"
                           + "  (or -1 to quit)");
      // get an int value from the user
      kat = sc.nextInt();
      // check whether it is a 
      if ((kat == -1) 
            || ((kat >= 1) 
                  && (kat <= 6) 
                  && (yahtz.isValidCategory(kat))))
      need = false;
    }
    // now that we're out of the while loop, we know we have a good categ.
    return kat;
  }

  // getValidKeeperString

  String getValidKeeperString() {

    // set up connection to keyboard
    Scanner sc = new Scanner(System.in);
    // str will eventually hold the string to return
    String str = ""; 
    // need governs the while loop
    boolean need = true;
    while (need) {
      // prompt the user to enter something
      System.out.println("Enter a valid keeper string (5 chars) "
                           + "... or -1 to quit)");
      // get the next String from the keyboard
      str = sc.next();
      // if the string is okay, set need to false so we can break
      // out of the while loop
      if (str.equals("-1") || str.length() == 5) need = false;
    }
    return str;
  }

  // playGame

  void playGame() {

    yahtz.resetGame();

    // outer for loop:  6 turns (one category filled for each turn)
    for (int i=0; i<6; i++) {
      // ask the yahtzee object to create a hand for the next turn
      YahtzeeHand h = yahtz.getHandForNextTurn();
      repaint();
      // the player gets two chances to re-roll the dice
      for (int roll = 0;  roll < 2; roll++) {
        // get a valid keeper string
        String keeperStr = getValidKeeperString();
        // check if player wants to quit
        if (keeperStr.equals("-1")) {
          System.out.println("Okay... fine... ABORTING GAME!");
          return;
        }
        else {
          // ask the yahtzeehand object to roll the dice selected by player
          h.rollEm(keeperStr);
          repaint();
        }
      }
      // get a category from the player
      int cat = getValidCategory();
      // check if player wants to quit
      if (cat == -1) {
        System.out.println("Okay, fine... ABORTING GAME!");
        return;
      }
      else {
        // ask the yahtzee object to score the hand in the selected category
        yahtz.scoreHand(cat);
        repaint();
      }
    }
    System.out.println("Well... you're done!  Final Score: " +
                       yahtz.computeTotalScore());
  }

}

import java.awt.*；
导入javax.swing.*；
导入java.util.*；
// -----------------------------
//GraphicalYahtzee类
// -----------------------------
类GraphicalYahtzee扩展了JFrame{
// --------------------------
//面向类的数据
// --------------------------
静态最终整数
框架宽度=600，框架高度=600，
分数左差=50，分数上差=50，
分数宽度=220，分数高度=320，
骰子左边缘=50，骰子上边缘=400，
骰子宽度=38，骰子高度=38，
骰子边框=2，骰子填充=5；
// --------------------------
//面向对象数据
// --------------------------
//与JFrame关联的内容窗格
集装箱cPane；
//Yahtzee游戏
雅特泽雅特兹；
//组成骰子的一组板
模具面板[]骰子=新模具面板[5]；
//用于显示分数的面板
计分板计分板；
/*艾迪特*////
公共静态void main（字符串[]args）{
}
// -----------------------
//建造师
// -----------------------
GraphicalYahtzee（）{
this.yahtz=新的Yahtzee（）；
//设置屏幕窗口的大小
此.setSize（框宽、框高）；
这个.setTitle（“图形YAHTZEE！”）；
//从JFrame获取对“内容窗格”的引用
//将其存储在“cPane”字段中
this.cPane=this.getContentPane（）；
//告诉“内容窗格”，我们将提供绝对
//要添加到其中的所有面板的坐标
this.cPane.setLayout（null）；
this.scorePanel=新的scorePanel（yahtz）；
//指定记分板的位置和大小
此.scorePanel.setBounds（分数左边缘，
得分(上)(下)(下)，
分数宽度，
得分（身高）；
//要求“contentPane”添加新的scorePanel
//它的内容。
this.cPane.add（this.scorePanel）；
//设置骰子面板
对于（int i=0；i=1）
&&（kat所有Java程序的入口点都是主要方法：

public static void main(String[] args) {
    GraphicalYahtzee game = new GraphicalYahtzee();
    game.playGame();
}

如果没有它，您的程序将无法运行。您的问题是您有一个main方法，并且找不到它，还是您真的想省略main方法？
Terik

如以下内容中所述：

此外,

This method must appear within a class, but it can be any class.

在理解执行main所涉及的加载、链接和初始化步骤方面，是一个很好的资源

如果您有任何问题，请告诉我！
只需创建自己的
公共静态void main（String[]args）
在哪里创建
GraphicalYahtzee
object我可以在哪里插入main方法？我假设编写的代码是可运行的。所以我想我并不是在试图避免它，我只是不确定它可以去哪里。将它添加到GraphicalYahtzee.java并执行：java GraphicalYahtzee添加了它，正如我在编辑中所示，这就是你想要的吗an？因为现在，它会运行，但随后会立即结束。在主方法的主体中，您希望实例化GraphicsYahzee对象。类似于：GraphicsYahzee game=new GraphicsYahzee（）；谢谢，我现在明白了。我不确定如何实现main（）方法导入到代码中。你能给我指出正确的方向吗？
This method must appear within a class, but it can be any class.