Generic Methods and Type Inferencing in Java

Question

Given the following not-very-useful code:

package com.something;

import java.util.ArrayList;
import java.util.Collectio         


        

Answer 1

While the compiler does not infer the generic type one might intend, it will enforce type constraints that are explicitly specified. The following invocation results in a type error.

this.plain("", new ArrayList()); /* Compiler error. */

The parameterized method plain(String, String) of type Test is not applicable for the arguments (String, ArrayList)