Abstract
As a popular on-line question and answer site [1], Stack Overflow has attracted millions of developers to communicate, collaborate, and share knowledge. Aiming to better understand the trend of Java, one of the most popular programming languages in the world, this study investigates millions of Java-related posts on Stack Overflow. In this study, we first employ Latent Dirichlet Allocation (LDA) to detect topics among Java-related posts. Then, we conduct further analysis over these detected topics, e.g., the most popular topic and the most difficult topic to answer. As a result, we detect 40 topics and top 10 key terms. The top four popular topics include System Platform, Java Archive, Import Sources, and Maven Build. Meanwhile, List, Web Development, JavaFX, and User Security are the top four difficult topics. Our study provides new insights into Java-related topics on Stack Overflow.
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