java如何获取用户输入呢?

获取用户输入的实现思路

实现思路:
    使用java.util.Scanner从控制台获取用户输入

Scanner读取一行数据

package com.java265; 
import java.util.Scanner; 
public class UserInputExample1 { 
    public static void main(String[] args) { 
        try (Scanner scanner = new Scanner(System.in)) { 
            System.out.print("输入字符: "); 
            String input = scanner.nextLine();  // 读取输入 
            System.out.println("User Input : " + input); 
        } 
    }
}

读取不同数据类型

package com.java265; 
import java.util.Scanner;
public class UserInputExample2 {
 
    public static void main(String[] args) {
 
        try (Scanner scanner = new Scanner(System.in)) {
            System.out.println("Please enter your name : ");
            String name = scanner.next(); // get string
 
            System.out.println("Please enter your age : ");
            int age = scanner.nextInt(); // get integer
 
            System.out.println("Please enter your salary : ");
            double salary = scanner.nextDouble(); // get double
 
            System.out.format("Name : %s, Age : %d, Salary : %.2f", name, age, salary);
        }
    }
}

InputStreamReader + BufferedReader读取

package com.java265;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
 
public class UserInputExample {
 
    public static void main(String[] args) throws IOException {
 
        try (BufferedReader br = new BufferedReader(new InputStreamReader(System.in))) {
 
            System.out.println("输入姓名: ");
            String name = br.readLine();
 
            System.out.println("输入年龄 : ");
            int age = Integer.parseInt(br.readLine());
 
            System.out.println("输入薪水 : ");
            double salary = Double.parseDouble(br.readLine());
 
            System.out.format("Name : %s, Age : %d, Salary : %.2f", name, age, salary);
        }
    }
}