Description Srikanth Sankaran 2011-02-22 03:26:32 EST

import java.util.List;
public class X {
   public static void main( String[] args ) {
      String arg = "SUCCESS";
      List<String> ls = Y.asList(arg, arg);
      System.out.println (ls);
   }
}
class Y {
	public static <T> List<T> asList(T ... a) {
		return null;
	}
}


The program above does not elicit any warnings when compiled with
1.5 and 1.6 javac. 1.7 compiler produces the newly mandated warning
as shown below.

C:\jtests>C:\jdk-7-ea-bin-b127-windows-i586-27_jan_2011\jdk7\jdk1.7.0\bin\javac
-Xlint:unchecked -Xlint:rawtypes -Xlint:deprecation -sourcepath c:\jtests X.java

X.java:11: warning: [unchecked] Possible heap pollution from parameterized varar
g type T
        public static <T> List<T> asList(T ... a) {
                                               ^
  where T is a type-variable:
    T extends Object declared in method <T>asList(T...)
1 warning

This warning is missing from eclipse on the same code compiled with
1.7 mode.