import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.IOException;

import java.net.Socket;

import java.net.UnknownHostException;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

public class Pruebas {

public static void main(String[] args) {

//

//Hasta java 6

//

Connection cx = null;

Socket sk = null;

FileReader fr = null;

try {

cx = DriverManager.getConnection("","","");

sk = new Socket("ip",5000);

fr = new FileReader("datos.txt");

} catch (UnknownHostException e) {

e.printStackTrace();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (SQLException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

} finally {

try {

cx.close();

sk.close();

fr.close();

} catch (SQLException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

//

//A partir de Java 7

//

try(Connection cx2 = DriverManager.getConnection("","","");

Socket sk2 = new Socket("ip",1000);

FileReader fr2 = new FileReader("datos.dat")){

//Nuestro código

} catch (SQLException | FileNotFoundException | UnknownHostException e) {

//No podemos agrupar en un mismo multicatch excepciones en la

//misma rama de herencia

e.printStackTrace();

} catch (IOException e ){

e.printStackTrace();

}

}

}