這部分收集觀看Effective Java針對Lambads and Streams章節後所整理的心得，其中不包含Item 45: Use streams judiciously；主要原因是這個章節是在強調「別濫用stream而讓程式碼更難以閱讀」，建議做法在後續的item有提及，因此這裡就不多贅述。以下為我整理的內容:

• Prefer lambdas to anonymous classes
• Prefer method references to lambdas
• Favor the use of standard functional interfaces
• Prefer Collection to Stream as a return type
• Prefer side-effect-free functions in streams
• Use caution when making streams parallel

• Effective Java, 3/e
• Java 8 中的 Streams API 详解