Input get in java
There is two different way to get the input in java. Scanner and BufferedReader.
1. Scanner
Scanner is used to get the input in a runtime.It's buffer memory size is 1KB.
Example-1
import java.util.Scanner;
public class Main
{
public static void main(String[] args)
{
Scanner object = new Scanner(System.in);
int a = object.nextInt();
System.out.print(a);
}
}
Output
Input :9 Output :9
Another data types Getting
| Data type | Scanner |
|---|---|
| int | object.nextInt() |
| float | object.nextFloat() |
| String | object.nextLine() |
| char | object.next().charAt(0); |
| double | object.nextDouble() |
| long | object.nextLong() |
2. BufferedReader
BufferedReader is used to get the input in a runtime. It's buffer memory size is 8KB. It is faster than scanner.
Example-1
import java.io.*;
public class Main
{
public static void main(String[] args) throws IOException
{
BufferedReader read = new BufferedReader(new InputStreamReader(System.in));
//get integer
int a=Integer.parseInt(read.readLine());
System.out.println(a);
//get string
String s=read.readLine();
System.out.println(s);
}
}
Output
Input :9 Output :9 Input :Books Output :Books
Another data types Getting
| Data type | BufferedReader |
|---|---|
| int | Integer.parseInt(read.readLine()); |
| float | Float.parseFloat(read.readLine()); |
| String | read.readLine(); |
| double | Double.parseDouble(read.readLine()); |
| long | Long.parseLong(read.readLine()); |