The success key of providing convenient government and commercial services on the internet lies in the authentication of individuals as well as to have highly trusted application systems. In the recent years, the risk and the cost created by the problems of hacker's malicious attack. Trojan and user mis-identification have become the major concern of individual consumers and IT departments. Therefore, when the Java technology becomes more maturity, the IT society group has the tendency of transferring to the use of Java technology. This gives the fact that Java is becoming more popular and it can provide the firm security to protect data and services. Nowadays, Java technology has been accepted as the handset standardized function by telecommunication industry. The smart cards based on the Java technology (i.e. Java card) are also applied to the user identity function by many enterprises and government departments. This paper discusses the development of Java card at present stage and furthermore, we give the possible situations of using the Java card in the trusted services on the internet.