deprecate OptionalBean

hutool-core/src/main/java/cn/hutool/core/bean/OptionalBean.java

@@ -15,7 +15,9 @@ import java.util.function.Supplier;
  * @param <T> Bean类型
  * @author totalo
  * @since 5.4.7
+ * @deprecated {@link java.util.Optional} 可以完成此类的所有功能。
  */
+@Deprecated
 public final class OptionalBean<T> {
 
 	private static final OptionalBean<?> EMPTY = new OptionalBean<>();

hutool-core/src/test/java/cn/hutool/core/bean/OptionalBeanTest.java

@@ -1,50 +0,0 @@
-package cn.hutool.core.bean;
-
-import org.junit.Assert;
-import lombok.Data;
-import org.junit.Test;
-
-public class OptionalBeanTest {
-
-	@Test
-	public void optionalBeanTest() {
-		User user = new User();
-		user.setName("hello");
-		String value1 = OptionalBean.ofNullable(user)
-				.getBean(User::getSchool)
-				.getBean(User.School::getAddress).get();
-		Assert.assertNull(value1);
-
-		boolean present = OptionalBean.ofNullable(user)
-				.getBean(User::getSchool)
-				.getBean(User.School::getAddress).isPresent();
-		Assert.assertFalse(present);
-
-		String value2 = OptionalBean.ofNullable(user)
-				.getBean(User::getSchool)
-				.getBean(User.School::getAddress).orElse("没得地址");
-		Assert.assertEquals(value2, "没得地址");
-		try {
-			OptionalBean.ofNullable(user)
-					.getBean(User::getSchool)
-					.getBean(User.School::getAddress).orElseThrow(() -> new RuntimeException("空指针了"));
-		} catch (Exception e) {
-			Assert.assertEquals(e.getMessage(), "空指针了");
-		}
-	}
-
-
-	@Data
-	public static class User {
-		private String name;
-		private String gender;
-		private School school;
-
-		@Data
-		public static class School {
-			private String name;
-			private String address;
-		}
-	}
-
-}