/**
 * A concrete class extends AbstractRead
 * This class can read from a file
 */
import java.io.*;

public class ReadFile extends AbstractRead {
 private BufferedReader in = null;
 public ReadFile() {
 }
 public ReadFile(String fileName) {
 resource = fileName;
 }
 protected boolean open() {
 try {
 in = new BufferedReader(new FileReader(resource));
 } catch(IOException e) {
 System.out.println("Can not open file!");
 return false;
 }
 return true;
 }
 protected void readContent() {
 try {
 if(in != null) {
 String str;
 while((str = in.readLine()) != null) {
 System.out.println(str); 
 }
 }
 } catch(IOException e) {
 System.out.println("Read file error !");
 }
 }
 protected void close() {
 if(in != null) {
 try {
 in.close();
 } catch(IOException e) {
 System.out.println("IO error !");
 }
 }
 }
}