Language Updates
Discover the important language updates introduced in Java 7. Learn how features like the diamond operator simplify generics, strings can now be used in switch statements, automatic resource management improves handling of resources, and exception handling supports catching multiple exceptions in one block. This lesson helps you understand these enhancements to write cleaner and more efficient Java code.
The following features have been added to the Java language:
- Diamond operator
- Strings in switch
- Automatic resource management
- Improved exception handling
- Numbers with underscores
Diamond operator
The Diamond operator simplifies the declaration of generic classes. The generic types are inferred from the definition of the field or variable.
Map<String, List<Double>> nums = new HashMap<String, List<Double>> ();
For example, the above code can also be written in Java 7 as:
Map<String, List<Double>>