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java guava examples

This commit is contained in:
Eugen Paraschiv 2013-10-22 18:07:49 +03:00
parent 361111b1e6
commit e491f953a5
2 changed files with 14 additions and 35 deletions
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29
guava/pom.xml
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@ -65,35 +65,6 @@
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>${maven-surefire-plugin.version}</version>
<configuration>
<excludes>
<!-- <exclude>**/*ProductionTest.java</exclude> -->
</excludes>
<systemPropertyVariables>
<!-- <provPersistenceTarget>h2</provPersistenceTarget> -->
</systemPropertyVariables>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.cargo</groupId>
<artifactId>cargo-maven2-plugin</artifactId>
<version>${cargo-maven2-plugin.version}</version>
<configuration>
<wait>true</wait>
<container>
<containerId>jetty8x</containerId>
<type>embedded</type>
<systemProperties>
<!-- <provPersistenceTarget>cargo</provPersistenceTarget> -->
</systemProperties>
</container>
<configuration>
<properties>
<cargo.servlet.port>8082</cargo.servlet.port>
</properties>
</configuration>
</configuration>
</plugin>
</plugins>

20
guava/src/test/java/org/baeldung/guava/collections/GuavaCollectionsExamples.java → guava/src/test/java/org/baeldung/guava/collections/GuavaCollectionsExamplesTest.java
View File

@ -7,28 +7,36 @@ import org.junit.Test;
import com.google.common.base.Function;
import com.google.common.collect.Lists;
public class GuavaCollectionsExamples {
public class GuavaCollectionsExamplesTest {
// tests
@SuppressWarnings({ "unused", "unchecked" })
@Test
public final void whenCastingAllElementsOfACollectionToSubtype_thenCastIsOK() {
public final void whenDowncastingGenerifiedCollectionToNewGenerifiedCollection_thenCastIsOK() {
final class CastFunction<F, T extends F> implements Function<F, T> {
@Override
@SuppressWarnings("unchecked")
@Override
public final T apply(final F from) {
return (T) from;
}
}
final List<Number> originalList = Lists.newArrayList();
final List<Integer> selectedProductsQuick = (List<Integer>) (List<? extends Number>) originalList;
final List<Integer> selectedProducts = Lists.transform(originalList, new CastFunction<Number, Integer>());
System.out.println(selectedProducts);
}
@SuppressWarnings({ "unchecked" })
@Test
public final void whenDowncastingGenerifiedCollectionToNewGenerifiedCollection_thenCastIsOK2() {
final List<Number> originalList = Lists.newArrayList();
final List<Integer> selectedProducts = (List<Integer>) (List<? extends Number>) originalList;
System.out.println(selectedProducts);
}
@Test
public final void when_then() {
//
}
}