Java 陣列的使用

Java 一維陣列的應用：

import java.util.Scanner;

public class OneArrayDemo{

 public static void main(String[] args){
 
  Shirt[] myShop = new Shirt[10];
  Scanner scanner = new Scanner(System.in);
  String temp1;
  
  myShop[0] = new Shirt();
   
  System.out.print("Please input the description: ");
  temp1 = scanner.nextLine();
  myShop[0].description = temp1;
  
  System.out.print("Please input the ShirtID: ");
  myShop[0].shirtID = scanner.nextInt();
    
  System.out.print("Please input the colorCode: ");
  temp1 = scanner.next();
  myShop[0].colorCode = temp1.charAt(0);
  
  System.out.print("Please input the price: ");
  myShop[0].price = scanner.nextDouble();
  
  myShop[0].displayInformation();
  
 }
}

Shirt 請參考另一篇文章！

二位陣列使用方式：

import java.util.Scanner;

public class TwoArrayDemo{

 public static void main(String[] args){
  
  int courses = 3;
  int students = 10;
  int[][] scores = new int[courses][students];
  
  System.out.println("請輸入數學科分數：");
  TwoArrayDemo.inputScore(1,students,scores);
  System.out.println();
  System.out.println("請輸入國文科分數：");
  TwoArrayDemo.inputScore(2,students,scores);
  System.out.println();
  System.out.println("請輸入英文科分數：");
  TwoArrayDemo.inputScore(3,students,scores);
  System.out.println();
  System.out.println("每位學生的平均分數：");
  TwoArrayDemo.avgScore(courses,students,scores);
 }
 
 public static void inputScore(int course,int students, int[][] scores){
  Scanner scanner = new Scanner(System.in);
  int sum = 0;
  for (int i = 0; i < students; i++){
   System.out.printf("請輸入第 %d 位學生成績：",(i+1));
   scores[course-1][i] = scanner.nextInt();
   sum += scores[course-1][i];
  }
  System.out.println("本科平均分數：" + ((double)sum)/students);
 }
 
 public static void avgScore(int courses,int students,int[][] scores){
  
  int temp = 0;
  for (int i = 0 ; i < students ; i++){
   for (int j = 0 ; j < courses ; j++){
    temp += scores[j][i];
   }
   System.out.printf("第 %d 位學生平均分數: %.2f\n",i, ((double)temp)/courses);
   temp = 0;
  }
 }
}

ArrayList 的使用方式：

import java.util.*;

public class ArrayListDemo{

 public static void main(String[] args){
 
  ArrayList myList = new ArrayList();

  myList.add("Peter");
  myList.add("James");
  myList.add("Piggy");
  myList.add("Janeson");
  myList.add("Tordy");
  
  myList.remove(0);
  myList.remove(myList.size()-1);
  myList.remove("Piggy");
  
  System.out.println(myList);
 }
}