Efficient data structures like ArrayList and HashMap effectively optimize Java application performance for specific use cases..Minimize object creation and use primitive types over wrappers to reduce memory usage and garbage collection..StringBuilder handles string concatenation better than the + operator, improving execution speed and resource efficiency..Profile Java applications using tools like VisualVM to identify bottlenecks and optimize critical resource-intensive code..Implement caching frameworks such as Ehcache or Caffeine to speed up data access and reduce database queries..Read More Stories