Instead of checking nulls all the way down the list

SomethingOrNull.java

import static org.junit.Assert.*;

import org.junit.Test;

import static org.hamcrest.CoreMatchers.*;

public class SomethingOrNothingTest {

	@Test
	public void shouldGiveMeSomething() throws Exception {
		final String nonNullString = "hello";
		String result = somethingOrNull(
				new Some<String>() { 
					public String result() {
						return nonNullString.toString();
					}
				});
		
		assertThat(result, is(notNullValue()));
	}
	

	@Test
	public void shouldGiveMeNothing() throws Exception {
		final String nullString = null;
		String result = somethingOrNull(
				new Some<String>() { 
					public String result() {
						return nullString.toString();
					}
				});
		
		assertThat(result, is(nullValue()));
	}

	
	
	public <T> T somethingOrNull(Some<T> something) {
		try {
			return (T) something.result();
		} catch (NullPointerException e) {
			return null;
		}
	}


	public abstract class Some<T> {
		public abstract T result();
	}
}