Java 8 performance and tuning

Live Classroom
Duration: 5 days
Live Virtual Classroom
Duration: 5 days
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During this two day training course, participants learn the essential skills for improving the Java applications using sound coding techniques and best practices. The course enables participants to learn in a dynamic, hands-on learning environment under the guidance of an expert trainer.

What You'll Learn

  • List possible metrics for measuring software performance
  • Explain the effect of object-oriented design on software performance
  • List an describe the types of benchmarks and the criteria that should be considered when constructing a benchmark plan
  • Explore the most useful targets for profiling, and the most common tools/techniques for profiling
  • Describe two strategies for improving performance as a result of profiling data
  • List and explain the five most common problem areas for good performance with Java
  • Use the JDK to collect runtime profiling data
  • Successfully read the profiling data generated by the JDK to detect performance bottlenecks
  • Instrument code to collect method execution time data
  • Learn code optimization techniques relating to object management, exceptions, threads and serialization
  • Understand the JVM architecture from the perspectives of performance
  • Examine and work with Java language features that can impact performance
  • Understand optimizing data structures in Java
  • Choose the correct collection for the task
  • Leverage the built in collections algorithm to enhance your code performance and security
  • Examine the many Java 8 features to understand their impact on performance


  • Memory management issues
  • Memory consumption of Java data types
  • CPU performance issues
  • Threading issues
  • Profiling and benchmarking
  • Java Microbenching Harness (JMH)
  • Code optimization techniques
  • Design optimization techniques

  • Creating and destroying objects
  • Factory methods
  • Impact of finalizers
  • Classes and interfaces
  • Immutability
  • Composition vs. inheritance
  • Exceptions
  • Threading constructs to avoid

  • Efficient strings and arrays
  • Efficient use of collections
  • Choosing a collection
  • Tuning collection constructors

  • Performance across Java versions
  • Impact of Java 8 concurrency updates
  • Tiered compilation
  • Nashorn vs. Java 7’s JavaScript engine
  • Lambda expressions vs. Inner classes
  • Impact of streams vs. collections
  • Date/time classes
  • I/O stream recommendations
  • Encoding/decoding
  • String and spring interning
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Who should attend

This is an intermediate level Java SE (JSE) developer course targeted towards experienced Java developers. It is highly recommended for –
  • Java developers
  • Software developers
  • Application developers
  • DevOps developers
  • Software engineers
  • Full stack developers


Participants need to have current hands-on experience in developing basic Java 8 applications. They also need to have completed the following courses or have equivalent skills –
  • Java programming fundamentals for OO experience developers
  • Java 8 and OO programming essentials for developers new to OO

Interested in this Course?

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