This research outlines the issue of Java language in the learning process at fifth grade students of public elementary school 83/IX Talang Belido Village, Sungai Gelam, Muaro Jambi, Jambi Province. This paper used three stages of qualitative descriptive method namely collecting data, analyzing data, and checking the data validity. At the stage of collecting data used basic techniques of Simak Bebas Libat Cakap (SLBC). The next stage of data analysis used a unified extralingual method and unified intralingual method. At the stage of data checking, observations and member checking conditions techniques were used. The results of the analysis revealed that interference occurs at the level of phonology, among others, the occurrence coding, interference vowels and consonants. While at the level of morphology, it  was found that several ater-ater / prefix: ater-ater {m}, {n}, {-ny}, {ng-}, and {ke-}. Panambang / suffix in the Java language, namely  {-e}, and {-ne}. Konfiks Java language, namely {ng-i}, {m-ake}, {ng-ake}, and {tak-ake}. Then syntactic interference also occurs at the level of phrases and sentences.