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Java モニターからの入力 java.util.Scanner

Last updated at Posted at 2020-11-28

#1,モニターに入力した文字列や数値を出力する方法

➊Scanner scanner = new Scanner();

➋String name = scanner.nextLine(); // 文字列の入力

➌int age = scanner.nextInt(); // 数値の入力

#2,ソースコード(モニターから入力して、モニターに出力)

Main.java
import java.util.Scanner;

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

        Scanner scanner = new Scanner(System.in);

        System.out.println("What is your name?");
        String name = scanner.nextLine();

        System.out.println("How old are you?");
        int age = scanner.nextInt();
        scanner.nextLine();

        System.out.println("What is your favorite food?");
        String food = scanner.nextLine();

        System.out.println("Hello " + name);
        System.out.println("You are " + age + " years old");
        System.out.println("You like " + food);
    }
}

#Java チュートリアル:clipboard:
:coffee: Java テキストファイル(.txt .csv)への出力 java.io.FileWriter : :white_check_mark:here
:coffee: Java テキストファイル(.txt .csv)からの入力 java.io.FileReader : :white_check_mark:here
:coffee: Java モニターからの入力 java.util.Scanner : :white_check_mark:here
:coffee: Java GUIからの入力 javax.swing.JOptionPane : :white_check_mark:here
:coffee: Java Mathクラス Math.sqrt : :white_check_mark:here
:coffee: Java 乱数の生成 java.util.Random : :white_check_mark:here
:coffee: Java Stringクラス : :white_check_mark:here
:coffee: Java Wrapperクラス : :white_check_mark:here
:coffee: Java ArrayListクラス java.util.ArrayList : :white_check_mark:here
:coffee: Java メソッド(method)の作り方とオーバーロード : :white_check_mark:here
:coffee: Java printf()メソッド : :white_check_mark:here
:coffee: Java オブジェクト(Object Oriented Programming)とコンストラクタ、スコープ(local,global) : :white_check_mark:here

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