# Remove Explicit Type Argument
# Description
Since Java 7 the Diamond Operator (opens new window) (<>) can be used to simplify instance creation where generics are involved.
# Benefits
Applying this rule reduces clutter and improves readability.
# Tags
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);
Use a Java Refactoring Tool
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System-wide Refactoring
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