Java Series (1)----Java features

I. Key features of Java
1. Simplicity
2. Security
3. Portability
4. Object-oriented
5. Robustness
6. Multithreading
7. Architecture Neutrality
8. Interpretation of implementation
9. High Performance
10. Distributed
11. Dynamic Nature

two. J2SE 5 main features
1. Generic
2. Annotations (annotation)
3. Auto-boxing and automatic unpacking
4. Enumeration
5. Enhanced For-each style for loop
6. Variable length parameters
7. Static import
Span style= "FONT-SIZE:14PX;" >8. Formatting I/O
9. Concurrency utility

Three. Important features of J2SE 7
1.String can now control switch statements
2. Binary integer Literals
3. Underline under numeric literals
4. An extended try statement, called a try (try-with-resources) statement with resources, supports automatic resource management.
5. Type judgment when constructing a generic instance (<>)
6. Enhanced exception handling, a single catch clause captures two or more exceptions, and provides better type checking for the thrown exception.