This document discusses memory leaks in Java. It begins with an introduction explaining that in Java, memory is automatically allocated by the JVM for new objects but unused objects may not be garbage collected, causing a memory leak. The document then outlines symptoms of memory leaks like increasing memory usage and decreasing performance. It discusses tools for detecting leaks and provides tips for preventing leaks such as avoiding string concatenation, unnecessary object creation, and properly closing resources. The document concludes with a question and answer section.