java.lang.Class.isEnum()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
字(7.1k)|赞(0)|评价(0)|浏览(213)

本文整理了Java中java.lang.Class.isEnum()方法的一些代码示例，展示了Class.isEnum()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Class.isEnum()方法的具体详情如下：
包路径：java.lang.Class
类名称：Class
方法名：isEnum

Class.isEnum介绍

[英]Tests whether the class represented by this Class is an enum.
[中]测试此类表示的类是否为枚举。

代码示例

代码示例来源：origin: apache/incubator-dubbo

@Override
public boolean accept(Type type, Class<?> clazz) {
  if (clazz == null) {
    return false;
  }
  return clazz.isEnum();
}

代码示例来源：origin: apache/incubator-dubbo

@Override
public boolean accept(Type type, Class<?> clazz) {
  if (clazz == null) {
    return false;
  }
  return clazz.isEnum();
}

代码示例来源：origin: libgdx/libgdx

/** Determines if the supplied Class object represents an enum type. */
static public boolean isEnum (Class c) {
  return c.isEnum();
}

代码示例来源：origin: libgdx/libgdx

/** Determines if the supplied Class object represents an enum type. */
static public boolean isEnum (Class c) {
  return c.isEnum();
}

代码示例来源：origin: google/guava

/** Creates an empty {@code EnumMultiset}. */
private EnumMultiset(Class<E> type) {
 this.type = type;
 checkArgument(type.isEnum());
 this.enumConstants = type.getEnumConstants();
 this.counts = new int[enumConstants.length];
}

代码示例来源：origin: apache/incubator-dubbo

/**
 * Determine if the object needs wrap
 *
 * @param clazz object type
 * @return need wrap
 */
public static boolean needWrapper(Class<?> clazz) {
  return WrapperUtils.WRAPPER_SET.contains(clazz) || clazz.isArray() || clazz.isEnum();
}

代码示例来源：origin: apache/incubator-dubbo

/**
 * Determine if the object needs wrap
 *
 * @param clazz object type
 * @return need wrap
 */
public static boolean needWrapper(Class<?> clazz) {
  return WrapperUtils.WRAPPER_SET.contains(clazz) || clazz.isArray() || clazz.isEnum();
}

代码示例来源：origin: apache/incubator-dubbo

public EnumSerializer(Class cl) {
  // hessian/32b[12], hessian/3ab[23]
  if (!cl.isEnum() && cl.getSuperclass().isEnum())
    cl = cl.getSuperclass();
  try {
    _name = cl.getMethod("name", new Class[0]);
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

代码示例来源：origin: spring-projects/spring-framework

public static Class<?> getEnumType(Class<?> targetType) {
  Class<?> enumType = targetType;
  while (enumType != null && !enumType.isEnum()) {
    enumType = enumType.getSuperclass();
  }
  Assert.notNull(enumType, () -> "The target type " + targetType.getName() + " does not refer to an enum");
  return enumType;
}

代码示例来源：origin: apache/incubator-dubbo

public EnumDeserializer(Class cl) {
  // hessian/33b[34], hessian/3bb[78]
  if (cl.isEnum())
    _enumType = cl;
  else if (cl.getSuperclass().isEnum())
    _enumType = cl.getSuperclass();
  else
    throw new RuntimeException("Class " + cl.getName() + " is not an enum");
  try {
    _valueOf = _enumType.getMethod("valueOf",
        new Class[]{Class.class, String.class});
  } catch (Exception e) {
    throw new RuntimeException(e);
  }
}

代码示例来源：origin: apache/incubator-dubbo

@Override
@SuppressWarnings({"unchecked", "rawtypes"})
public Object readValue(Class<?> c, Object jv) throws IOException {
  if (jv == null) {
    return null;
  }
  Decoder decoder = GlobalDecoderMap.get(c);
  if (decoder != null) {
    return decoder.decode(jv);
  }
  if (c.isEnum()) {
    return Enum.valueOf((Class<Enum>) c, String.valueOf(jv));
  }
  return jv;
}

代码示例来源：origin: apache/incubator-dubbo

@Override
@SuppressWarnings({"unchecked", "rawtypes"})
public Object readValue(Class<?> c, Object jv) throws IOException {
  if (jv == null) {
    return null;
  }
  Decoder decoder = GlobalDecoderMap.get(c);
  if (decoder != null) {
    return decoder.decode(jv);
  }
  if (c.isEnum()) {
    return Enum.valueOf((Class<Enum>) c, String.valueOf(jv));
  }
  return jv;
}

代码示例来源：origin: org.mockito/mockito-core

private void checkNotEnum(Field field) {
  if(field.getType().isEnum()) {
    throw new MockitoException("the type '" + field.getType().getSimpleName() + "' is an enum.");
  }
}

代码示例来源：origin: prestodb/presto

/** Creates an empty {@code EnumMultiset}. */
private EnumMultiset(Class<E> type) {
 this.type = type;
 checkArgument(type.isEnum());
 this.enumConstants = type.getEnumConstants();
 this.counts = new int[enumConstants.length];
}

代码示例来源：origin: spring-projects/spring-framework

@Override
public void visit(String attributeName, Object attributeValue) {
  Object newValue = attributeValue;
  Object existingValue = this.attributes.get(this.attributeName);
  if (existingValue != null) {
    newValue = ObjectUtils.addObjectToArray((Object[]) existingValue, newValue);
  }
  else {
    Class<?> arrayClass = newValue.getClass();
    if (Enum.class.isAssignableFrom(arrayClass)) {
      while (arrayClass.getSuperclass() != null && !arrayClass.isEnum()) {
        arrayClass = arrayClass.getSuperclass();
      }
    }
    Object[] newArray = (Object[]) Array.newInstance(arrayClass, 1);
    newArray[0] = newValue;
    newValue = newArray;
  }
  this.attributes.put(this.attributeName, newValue);
}

代码示例来源：origin: eclipse-vertx/vert.x

public TypedOption<T> setType(Class<T> type) {
 this.type = type;
 if (type != null  && getChoices().isEmpty() && type.isEnum()) {
  setChoicesFromEnumType();
 }
 return this;
}

代码示例来源：origin: prestodb/presto

/**
 * Helper method for recognizing `Enum.valueOf()` factory method
 *
 * @since 2.8.1
 */
protected boolean _isEnumValueOf(AnnotatedWithParams creator) {
  return creator.getDeclaringClass().isEnum()
      && "valueOf".equals(creator.getName());
}

代码示例来源：origin: spring-projects/spring-framework

@Override
@Nullable
public String[] getParameterNames(Constructor<?> ctor) {
  if (ctor.getDeclaringClass().isEnum() || !KotlinDetector.isKotlinType(ctor.getDeclaringClass())) {
    return null;
  }
  try {
    KFunction<?> function = ReflectJvmMapping.getKotlinFunction(ctor);
    return (function != null ? getParameterNames(function.getParameters()) : null);
  }
  catch (UnsupportedOperationException ex) {
    return null;
  }
}

代码示例来源：origin: apache/incubator-dubbo

private static JavaBeanDescriptor createDescriptorForSerialize(Class<?> cl) {
  if (cl.isEnum()) {
    return new JavaBeanDescriptor(cl.getName(), JavaBeanDescriptor.TYPE_ENUM);
  } else if (cl.isArray()) {
    return new JavaBeanDescriptor(cl.getComponentType().getName(), JavaBeanDescriptor.TYPE_ARRAY);
  } else if (ReflectUtils.isPrimitive(cl)) {
    return new JavaBeanDescriptor(cl.getName(), JavaBeanDescriptor.TYPE_PRIMITIVE);
  } else if (Class.class.equals(cl)) {
    return new JavaBeanDescriptor(Class.class.getName(), JavaBeanDescriptor.TYPE_CLASS);
  } else if (Collection.class.isAssignableFrom(cl)) {
    return new JavaBeanDescriptor(cl.getName(), JavaBeanDescriptor.TYPE_COLLECTION);
  } else if (Map.class.isAssignableFrom(cl)) {
    return new JavaBeanDescriptor(cl.getName(), JavaBeanDescriptor.TYPE_MAP);
  } else {
    return new JavaBeanDescriptor(cl.getName(), JavaBeanDescriptor.TYPE_BEAN);
  }
}

代码示例来源：origin: apache/incubator-dubbo

private static JavaBeanDescriptor createDescriptorForSerialize(Class<?> cl) {
  if (cl.isEnum()) {
    return new JavaBeanDescriptor(cl.getName(), JavaBeanDescriptor.TYPE_ENUM);
  } else if (cl.isArray()) {
    return new JavaBeanDescriptor(cl.getComponentType().getName(), JavaBeanDescriptor.TYPE_ARRAY);
  } else if (ReflectUtils.isPrimitive(cl)) {
    return new JavaBeanDescriptor(cl.getName(), JavaBeanDescriptor.TYPE_PRIMITIVE);
  } else if (Class.class.equals(cl)) {
    return new JavaBeanDescriptor(Class.class.getName(), JavaBeanDescriptor.TYPE_CLASS);
  } else if (Collection.class.isAssignableFrom(cl)) {
    return new JavaBeanDescriptor(cl.getName(), JavaBeanDescriptor.TYPE_COLLECTION);
  } else if (Map.class.isAssignableFrom(cl)) {
    return new JavaBeanDescriptor(cl.getName(), JavaBeanDescriptor.TYPE_MAP);
  } else {
    return new JavaBeanDescriptor(cl.getName(), JavaBeanDescriptor.TYPE_BEAN);
  }
}

内容来源于网络，如有侵权，请联系作者删除！

Class

相关文章

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新文章

    更多

    Class类方法

    • 蜀ICP备13028337号-1 大数据知识库 https://www.saoniuhuo.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com