Java's reputation for sluggishness was really formed based on people's experience with Applets and Swing applications and especially badly written Applets and Swing applications.
Java in the real world is fast. That's why it's used as the backbone of so many large organizations and so many scale out solutions (Cassandra, Kafka, Hadoop, etc) are written in Java.
Java in the real world is fast. That's why it's used as the backbone of so many large organizations and so many scale out solutions (Cassandra, Kafka, Hadoop, etc) are written in Java.