To read from keyboard - java

use java.io package

import java.io.*;

next you'll need an InputStreamReader to read from the System.in stream
Code:
InputStreamReader isr = new InputStreamReader(System.in) );
afterwards, you'll need a BufferedReader to store the stream

Code:
BufferedReader br = new BufferedReader(isr);

use the readLine() method to get a string

Code:
String sampleString = br.readLine();
put it all together

Code:
import java.io.*;
class RandomClass
{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in) );
String sample = br.readLine()
}