How to input statements in java: 1. Enter a single character [char c=(char)System.in.read()]; 2. Enter an integer or string [int a=cin.nextInt()] ;3. You can use the BufferedReader class for input.
How to input statements in java:
If you want to input, please add two packages
import java.util.*; import java.io.*;
Please see the following example for inputting a single character
import java.io.*; import java.util.*; public class Main{ public static void main(String[] args)throws IOException{ char c=(char)System.in.read(); System.out.println(c); } }
Enter an integer or character (string)
import java.io.*; import java.util.*; public class Main{ public static void main(String[] args)throws IOException{ Scanner cin=new Scanner(System.in); int a=cin.nextInt();//输入一个整数 System.out.println(a); double b=cin.nextDouble();//输入一个双精度的浮点数 System.out.println(b); String str=cin.next();//输入一个单词，遇到分号则输入终止 System.out.println(str); String str2=cin.nextLine();//输入一行，中间可有多个空格 System.out.println(str2); } }
You can also use the BufferedReader class to input
import java.io.*; import java.util.*; public class Main{ public static void main(String[] args)throws IOException{ BufferedReader cin=new BufferedReader(new InputStreamReader(System.in)); String str=cin.readLine();//输入一行 System.out.println(str); String str2=cin.readLine(); int a=Integer.parseInt(str2);//将str2转换为int,并复制给a System.out.println(a); String str3=cin.readLine(); double b=Double.parseDouble(str3);//将str3转换为double,并复制给b System.out.println(b); } }
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