Template Method Pattern Use Cases and Examples in Java

Template Method is strongest in Java where inheritance is already the chosen extension mechanism.

Strong Java Use Cases

• skeletal framework base classes
• exporters and importers
• batch processors with stable lifecycle phases
• request handling templates

Weak Java Use Cases

Template Method is weak when:

• only one step varies and composition would be simpler
• subclass explosion is already becoming a problem
• the fixed algorithm assumption is not really true

Use it when stable ordering matters more than maximal flexibility.