RAII

When using a stream, Closeable, or any class that uses RAII always properly close it with regard to exceptions.

C++

To avoid having to manually do try...catch, try to use scoped guards such as unique_ptr or scoped_guard. Always try to follow RAII principles in classes you write by writing a proper constructor and destructor.

There are some situations where you can't use RAII due to threading rules (like with OpenGL). In these catches, you need to use great care to make sure resources are properly cleaned up when an exception occurs.

Java

Use try...finally syntax.

EXAMPLE:

final BufferedReader r = new BufferedReader(new InputStreamReader(address.openStream()));
try{
    String inLine;
    while ((inLine = r.readLine()) != null) {
        System.out.println(inLine);
    }
}finally{
    r.close();
}

Or even better:

try(final BufferedReader r = new BufferedReader(new InputStreamReader(address.openStream()))){
    String inLine;
    while ((inLine = r.readLine()) != null) {
        System.out.println(inLine);
    }
}