Builder pattern

SshClient.java

class SshClient {
  SshClient(String user, String host, int port, int timeout) {
    // ...
  }

  SshClient(String user, String host) {
    this(user, host, 22, 60);
  }

  SshClient(String user, String host, int port) {
    this(user, host, port, 60);
  }

  SshClient(String user, String host, int timeout) { // <- compile error
    this(user, host, 22, timeout);
  }
}