This paper explains transport layer security implemented in Java 9 based on datagram protocol. Building secure software requires the use of a wide variety of security controls, at different layers of the application. Java 9 security enhancement support transport-independent and light-weight DTLS version 1.0 and 1.2. Datagram Transport Layer Security (DTLS) protocol is designed to construct “TLS over datagram” traffic that doesn't require or provide reliable or in-order delivery of data. DTLS is a datagram-compatible variant of TLS. The DTLS API provides communications privacy for datagram protocols that allow client/server applications to communicate in a way that is designed to prevent eavesdropping, tampering, or message forgery through SSLEngine. DTLS are the best solution for encrypting and transmitting real-time data. The use of the DTLS API in Java provides access to the application data in each DTLS message.