Effective Java 60 Favor the use of standard exceptions

【Effective Java 60 Favor the use of standard exceptions】的更多相关文章

Effective Java 60 Favor the use of standard exceptions

Benefits to reuse preexisting exceptions It makes your API easier to learn and use. Programs using your API are easier to read. Fewer exception classes mean a smaller memory footprint and less time spent loading classes. Common Exceptions Exception O…

Effective Java 16 Favor composition over inheritance

Inheritance disadvantage Unlike method invocation, inheritance violates encapsulation. Since you don't know the super class implementation which may involve some unpredictable calling between different methods of super class. And it is difficult to m…

Effective Java 26 Favor generic types

Use generic types to replace the object declaration Add one or more type parameters to its declaration. Replace all the uses of the type Object with the appropriate type parameter. Handle the new E[] errorwith two ways : Use the explicit type casting…

Effective Java 27 Favor generic methods

Static utility methods are particularly good candidates for generification. The type parameter list, which declares the type parameter, goes between the method's modifiers and its return type. // Generic method public static <E> Set<E> union(S…

Effective Java 59 Avoid unnecessary use of checked exceptions

The burden is justified if the exceptional condition cannot be prevented by proper use of the API and the programmer using the API can take some useful action once confronted with the exception. ask yourself how the programmer will handle the excepti…

Effective Java Index

Hi guys, I am happy to tell you that I am moving to the open source world. And Java is the 1st language I have chosen for this migration. It's a nice chance to read some great books like "Effective Java 2nd Edition" and share the note for what I…

《Effective Java》读书笔记 - 9.异常

Chapter 9 Exceptions Item 57: Use exceptions only for exceptional conditions 这条item的意思就是,千万不要用exception来控制control flow的终止,比如: // Horrible abuse of exceptions. Don't ever do this! try { int i = 0; while(true) range[i++].climb(); } catch(ArrayIndexOutO…