- ImmutableList
用ImmutableList構建List:
import com.google.common.collect.ImmutableList;
import org.junit.Test;
import java.util.List;
import static org.junit.Assert.assertEquals;
public class ImmutableListStudyTest {
@Test
public void test_Immutable_List() throws Exception {
List<Object> params = ImmutableList.builder()
.add(1)
.add("2")
.add(3L)
.build();
assertEquals(params.get(0), 1);
assertEquals(params.get(1), "2");
assertEquals(params.get(2), 3L);
}
}
compile group: 'com.google.guava', name: 'guava', version: '23.5-jre
