declare bufferedreader java

1import java.io.BufferedReader;
2//
3BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
4System.out.println(reader.readLine());

1class Main {
2	public static void main (String[] args) throws IOException{
3                      
4		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
5		String[] str = br.readLine().split(" ");      // 6 2
6		String[] input = br.readLine().split(" ");   // 1 2 3 4 5 6
7
8
9		int n = Integer.parseInt(str[0]);  // 6
10		int k = Integer.parseInt(str[1]);  // 2
11
12		
13      	int [] arr = new int [n];
14		
15      	for(int i=0; i<n; i++) 
16		{
17         arr[i] = Integer.parseInt(input[i]);  // 1 2 3 4 5 6
18        }
19	  
20	  
21	}
22}
23

1BufferedReader br = new BufferedReader(new InputStreamReader(System.in));