Improved type inference in java 7

Posted in: Core Java

Before java 7, while using generics you had to supply type parameters to variables types and to their actual types. Now, it has been relieved a bit in this new java 7 feature, and a blank diamond on right side of declaration will work properly. Java 7 Compiler will identify that blank diamond infer to type defined on left hand side of declaration.

public class JavastuffOper {
    public static void main(String[] args) {
       Map<string , Double> params = new HashMap<>();  
     // Rest of the code 
} 

}

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