java 获取用户输入

import java.util.Scanner;

public class Sample {

    public static void main(String[] args) {
        int num;
        Scanner ip = new Scanner(System.in);
        System.out.print("Enter a number: ");
        num = ip.nextInt();
        System.out.println("The input number is " + num);
        ip.close(); // necessary to avoid memory leaks
    }
}

OUTPUT:
Enter a number:
The input number is 

获取多个整数输入

import java.util.Scanner;

public class Sample {

    public static void main(String[] args) {
        int num1, num2;
        Scanner ip = new Scanner(System.in);
        System.out.print("Enter num1: ");
        num1 = ip.nextInt();
        System.out.print("Enter num2: ");
        num2 = ip.nextInt();
        System.out.println("The input number is " + num1);
        System.out.println("The input number is " + num2);
        ip.close();
    }
}

OUTPUT:
Enter num1:
Enter num2:
The input number is
The input number is 

获取字符串

import java.util.Scanner;

public class Sample {

    public static void main(String[] args) {
        String str;
        Scanner ip = new Scanner(System.in);
        System.out.print("Enter a string: ");
        str = ip.nextLine();
        System.out.println("The input string is " + str);
        ip.close();
    }
}

OUTPUT:
Enter a string: I love dragon ball z
The input string is I love dragon ball z

获取多个字符串

import java.util.Scanner;

public class Sample {

    public static void main(String[] args) {
        String str1, str2, str3;
        Scanner ip = new Scanner(System.in);
        System.out.print("Enter string1: ");
        str1 = ip.nextLine();
        System.out.print("Enter string2: ");
        str2 = ip.nextLine();
        System.out.print("Enter string3: ");
        str3 = ip.nextLine();
        System.out.println("str1 is " + str1);
        System.out.println("str2 is " + str2);
        System.out.println("str3 is " + str3);
        ip.close();
    }
}

OUTPUT:
Enter string1: Goku
Enter string2: Gohan
Enter string3: Vegeta
str1 is Goku
str2 is Gohan
str3 is Vegeta