Java Code Examples for

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Example 1
Project: lams   File:   Source Code and License Vote up 6 votes
 * Checks whether a socket connection is secure.
 * This factory creates plain socket connections
 * which are not considered secure.
 * @param sock      the connected socket
 * @return  <code>false</code>
 * @throws IllegalArgumentException if the argument is invalid
public final boolean isSecure(Socket sock)
    throws IllegalArgumentException {

    if (sock == null) {
        throw new IllegalArgumentException("Socket may not be null.");
    // This class check assumes that createSocket() calls the constructor
    // directly. If it was using, we couldn't make
    // an assumption about the socket class here.
    if (sock.getClass() != Socket.class) {
        throw new IllegalArgumentException
            ("Socket not created by this factory.");
    // This check is performed last since it calls a method implemented
    // by the argument object. getClass() is final in java.lang.Object.
    if (sock.isClosed()) {
        throw new IllegalArgumentException("Socket is closed.");

    return false;