More abuse of Java generics.

CastTest.java

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

@RunWith(JUnit4.class)
public class CastTest {
	public static class AutoCast {
		@SuppressWarnings("unchecked")
		public static <T> T cast(final Object object) {
			return (T) object;
		}
	}

	@Test
	public void testCast()
			throws Exception {
		final String s = "test";
		final Object o = s;
		final String t = AutoCast.cast(o);
		assert t.equals(s);
	}

	@Test(expected = ClassCastException.class)
	public void testBadCast()
			throws Exception {
		final Object o = new Object();
		final String p = AutoCast.cast(o);
	}
}