Remove Explicit Type Argument
Properties
| Property | Value |
|---|---|
| First seen in jSparrow version | 1.0.0 |
| Minimum Java version | 7 |
| Remediation cost | 1 min |
| Links | S2293 |
Description
Since Java 7 the Diamond Operator (<>) can be used to simplify instance creation where generics are involved.
Benefits
Applying this rule reduces clutter and improves readability.
Requirement & Tags
Requirements
Java 7
Tags
Code Changes
Type arguments on new instance creations
Pre
Map<String, List<String>> myMap = new HashMap<String, List<String>>();
Post
Map<String, List<String>> myMap = new HashMap<>();
Type arguments on method invocation parameters
Pre
// Requires Java 8
List<GenericSample> result = foo.genericMethod(new ArrayList<GenericSample>(), input);
Post
// Requires Java 8
List<GenericSample> result = foo.genericMethod(new ArrayList<>(), input);