BufferedReader

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class BufferedReaderTest {

	public static void main(String[] args) throws Exception{

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

        String str2 = br.readLine(); //라인 단위 입력

        System.out.println("str2="+ str2);
        br.close();//입출력 객체에 대한 자원 반환
	}//main

}