Kaadị Java na-ezo aka na nkà na ụzụ ngwanrọ nke na-enye ohere ka ngwa ngwa Java (applets) na-agba ọsọ na kaadị smart na ngwaọrụ ndị yiri nke obere ebe nchekwa. Kaadị Java bụ nke kachasị nta nke usoro Java nke ezubere maka ngwaọrụ agbakwunyere. Kaadị Java na-enye onye ọrụ ikike ịhazi ngwaọrụ ma mee ka ha bụrụ ngwa ngwa. A na-eji ya eme ihe na kaadị SIM (eji na GSM mobile phones) na kaadị ATM. E webatara Kaadị Java mbụ na 1996 site na ngalaba kaadị Schlumberger nke mechara jikọtara ya na Gemplus iji mepụta Gemalto. Ngwaahịa Kaadị Java dabere na nkọwapụta Kaadị Java Platform nke Sun Microsystems mepụtara (mgbe e mesịrị ụlọ ọrụ nke Oracle Corporation). Ọtụtụ ngwaahịa Java na-adaberekwa na nkọwapụta GlobalPlatform maka njikwa nchekwa nke ngwa na kaadị (nbudata, nwụnye, nhazi, nhichapụ). Ajụjụ: Kedu ụlọ ọrụ bụ isi mepụtara Kaadị Java?
Sun Microsystems