在Java學習中會做一些小項目，而有趣且簡單的項目“猜數字”是一個簡短的Java項目，它允許用戶猜出計算機生成的數字，包括以下步驟：

1.系統從給定范圍生成一個隨機數，比如 1 到 100。

2.提示用戶在顯示的對話框中輸入他們給定的號碼。

3.然后計算機會告訴輸入的數字是否與猜測數字匹配，或者它是否高于/低于生成的數字。

4.游戲在用戶猜數字下繼續。

您還可以將更多詳細信息合并為：

限制嘗試次數。

添加更多回合。

顯示分數。

根據嘗試次數給予積分。

源代碼

package guessinggame;
* Java game “Guess a Number” that allows user to guess a random number that has been generated.
*/
import javax.swing.*;
public class GuessingGame {
    public static void main(String[] args) {
        int computerNumber = (int) (Math.random()*100 + 1);
        int userAnswer = 0;
        System.out.println("The correct guess would be " + computerNumber);
        int count = 1;
        while (userAnswer != computerNumber)
        {
            String response = JOptionPane.showInputDialog(null,
                "Enter a guess between 1 and 100", "Guessing Game", 3);
            userAnswer = Integer.parseInt(response);
            JOptionPane.showMessageDialog(null, ""+ determineGuess(userAnswer, computerNumber, count));
            count++;
        }  
    }
    public static String determineGuess(int userAnswer, int computerNumber, int count){
        if (userAnswer <=0 || userAnswer >100) {
            return "Your guess is invalid";
        }
        else if (userAnswer == computerNumber ){
            return "Correct!\nTotal Guesses: " + count;
        }
        else if (userAnswer > computerNumber) {
            return "Your guess is too high, try again.\nTry Number: " + count;
        }
        else if (userAnswer < computerNumber) {
            return "Your guess is too low, try again.\nTry Number: " + count;
        }
        else {
            return "Your guess is incorrect\nTry Number: " + count;
        }
    }
}

Java項目還有很多，這只是其中一個，大家還想了解其他項目，可以關注一下動力節點的Java畢業設計項目，里面有更多項目可以參考，相信對大家會有所幫助的。