Description Clifford Johnson 2015-06-23 17:48:03 EDT

The following code compiles successfully with javac 1.8.0_31 but does not compile with Eclipse 4.5 (Mars) or the update published in org.eclipse.jdt.core_3.11.0.v20150602-1242.jar.

package net.codefool.wildcard;

public class EcjVsWildcardMethodParameter {

  public static void main(String[] args) {
    final Parameter<String, ? extends Comparable<?>> parameter = getParameter();
    final Result<String> result = getResult(parameter);
//    final Result<String> result = getResult((Parameter) parameter);
  }

  private static Parameter<String, ? extends Comparable<?>> getParameter() {
    return null;
  }

  private static <K extends Comparable<K>, V extends Comparable<V>> Result<K> getResult(final Parameter<K, V> parameter) {
    return new Result<>();
  }

  private static class Result<K extends Comparable<K>> {
  }

  private static class Parameter<K extends Comparable<K>, V extends Comparable<V>> {
  }
}


Casting parameter using the raw type permits compilation with a number of warnings.


********:ecjFault $ java -jar ~/Downloads/Eclipse/Mars/Eclipse.app/Contents/Eclipse/plugins/org.eclipse.jdt.core_3.11.0.v20150602-1242.jar -1.8 src/net/codefool/wildcard/EcjVsWildcardMethodParameter.java 
----------
1. ERROR in ********/ecjFault/src/net/codefool/wildcard/EcjVsWildcardMethodParameter.java (at line 10)
	final Result<String> result = getResult(parameter);
	                              ^^^^^^^^^
The method getResult(EcjVsWildcardMethodParameter.Parameter<K,V>) in the type EcjVsWildcardMethodParameter is not applicable for the arguments (EcjVsWildcardMethodParameter.Parameter<String,capture#3-of ? extends Comparable<?>>)
----------
1 problem (1 error)