如果您已經學習了Java的基礎知識，那么現在正是解決一些實踐問題的好時機。練習和解決問題將幫助您掌握 Java 編程語言并將您的技能提升到一個新的水平。

我整理了一些可以用于練習的 Java 編碼問題。我還提供了 Java 代碼解決方案和相應的輸出供您參考。

1. Java程序檢查給定數字是偶數還是奇數

import java.util.Scanner;

class Main {
  public static void main(String[] args) {

    System.out.println("Enter a number: ");
    Scanner sc = new Scanner(System.in);
    int number =Integer.parseInt(sc.nextLine());
    int x = number%2;
    
    if(x==0){
      System.out.println("The number is Even");
    }
    else{
      System.out.println("The number is Odd");
    }
    
  }
}

輸出：

2. 將攝氏溫度轉換為華氏溫度的Java程序

import java.util.Scanner;

class Main {
  public static void main(String[] args) {

    System.out.println("Enter temperature in Centigrade: ");
    Scanner sc = new Scanner(System.in);
    int c =Integer.parseInt(sc.nextLine());
    float f = ((9*c)/5)+32;
    
    System.out.println("Temperature in Fahrenheit is: "+f);
    
  }
}

輸出：

3. Java 程序求給定三個邊的三角形面積

import java.util.Scanner;

class Main {
  public static void main(String[] args) {

    Scanner sc= new Scanner(System.in);
        
         System.out.println("Enter the 1st side:");
         int a= sc.nextInt();
 
         System.out.println("Enter the 2nd side:");
          int b= sc.nextInt();
 
         System.out.println("Enter the 3rd side:");
         int c= sc.nextInt();
    
         if((a+b)>c && (a+c)>b && (b+c)>a)
          {
            double s=(a+b+c)/2.0;
            double area=Math.sqrt(s*(s-a)*(s-b)*(s-c));
            System.out.println("Area of Triangle is: " + area);    
           }
         else  
           System.out.println("Area of the triangle does not exist");
    
  }
}

輸出：

4. Java程序求一組整數的平均值

import java.util.Scanner;

class Main {
  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    System.out.println("Enter the count of numbers: ");
    int count = Integer.parseInt(sc.nextLine());
    int i = 0;
    float sum = 0;
    for(i=0;i<count;i++){
      System.out.println("Enter an integer: ");
      int x = Integer.parseInt(sc.nextLine());
      sum = sum + x;
    }
  
    float avg = sum/count;
    System.out.println("The average is: "+avg);
    
  }
}

輸出：

5. Java 程序求一組實數的乘積

import java.util.Scanner;

class Main {
  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    System.out.println("Enter the number of real numbers: ");
    int count = Integer.parseInt(sc.nextLine());
    int i = 0;
    float product = 1.0f;
    for(i=0;i<count;i++){
      System.out.println("Enter a real number: ");
      float x = Float.parseFloat(sc.nextLine());
      product = product * x;
    }
  
    System.out.println("The product of the numbers is: "+product);
    
  }
}

輸出：

以上就是動力節點小編介紹的"五個Java初學者練習題與解決方案"，希望對大家有幫助，如有疑問，請在線咨詢，有專業老師隨時為您務。