Works for me

root@theon:~ # dpkg-query -s sun-java6-jdk
Package: sun-java6-jdk
Status: install ok installed
Priority: optional
Section: non-free/java
Installed-Size: 59940
Maintainer: Debian Java Maintainers <pkg-java-
maintainers@lists.alioth.debian.org>
Architecture: amd64
Source: sun-java6
Version: 6.22-1
Provides: java-compiler, java-sdk, java2-compiler, java2-sdk, java5-sdk,
java6-sdk
Depends: sun-java6-bin (>= 6.22-1), libc6, libx11-6
Pre-Depends: debconf (>= 0.5) | debconf-2.0
Suggests: sun-java6-demo, openjdk-6-doc, sun-java6-source
Description: Sun Java(TM) Development Kit (JDK) 6
 The JDK(TM) is a development environment for building applications,
 applets, and components using the Java programming language.
 .
 The JDK includes tools useful for developing and testing programs
 written in the Java programming language and running on the Java
 Platform.
 .
 NOTE: You must accept Sun's EULA prior to successfully installing
 this package
Homepage: https://jdk-distros.dev.java.net

ldo@theon:java_try> cat test.java
class test
  {
    public static void main(String[] args)
      {
        System.out.print("Got...");
        double c = 2.2250738585072011e-308;
        System.out.println(" here.");
      } /*main*/
  }

ldo@theon:java_try> javac test.java
ldo@theon:java_try> java test
Got... here.