Example usage for java.lang Class getDeclaredFields

List of usage examples for java.lang Class getDeclaredFields

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Introduction

In this page you can find the example usage for java.lang Class getDeclaredFields.

Prototype

@CallerSensitive
public Field[] getDeclaredFields() throws SecurityException

Source Link

Document

Returns an array of Field objects reflecting all the fields declared by the class or interface represented by this Class object.

Usage

From source file:MyJavaP.java

/**
 * Format the fields and methods of one class, given its name.
 *//*from  w  w w.j  a  v a 2  s . c o  m*/
protected void doClass(String className) {

    try {
        Class c = Class.forName(className);
        System.out.println(Modifier.toString(c.getModifiers()) + ' ' + c + " {");

        int mods;
        Field fields[] = c.getDeclaredFields();
        for (int i = 0; i < fields.length; i++) {
            if (!Modifier.isPrivate(fields[i].getModifiers())
                    && !Modifier.isProtected(fields[i].getModifiers()))
                System.out.println("\t" + fields[i]);
        }
        Constructor[] constructors = c.getConstructors();
        for (int j = 0; j < constructors.length; j++) {
            Constructor constructor = constructors[j];
            System.out.println("\t" + constructor);

        }
        Method methods[] = c.getDeclaredMethods();
        for (int i = 0; i < methods.length; i++) {
            if (!Modifier.isPrivate(methods[i].getModifiers())
                    && !Modifier.isProtected(methods[i].getModifiers()))
                System.out.println("\t" + methods[i]);
        }
        System.out.println("}");
    } catch (ClassNotFoundException e) {
        System.err.println("Error: Class " + className + " not found!");
    } catch (Exception e) {
        System.err.println(e);
    }
}

From source file:Main.java

public static void print_class(Class c) {
    if (c.isInterface()) {
        System.out.print(Modifier.toString(c.getModifiers()) + " " + typename(c));
    } else if (c.getSuperclass() != null) {
        System.out.print(Modifier.toString(c.getModifiers()) + " class " + typename(c) + " extends "
                + typename(c.getSuperclass()));
    } else {// w ww . ja  v  a2  s  .co  m
        System.out.print(Modifier.toString(c.getModifiers()) + " class " + typename(c));
    }

    Class[] interfaces = c.getInterfaces();
    if ((interfaces != null) && (interfaces.length > 0)) {
        if (c.isInterface())
            System.out.print(" extends ");
        else
            System.out.print(" implements ");
        for (int i = 0; i < interfaces.length; i++) {
            if (i > 0)
                System.out.print(", ");
            System.out.print(typename(interfaces[i]));
        }
    }

    System.out.println(" {");

    Constructor[] constructors = c.getDeclaredConstructors();
    for (int i = 0; i < constructors.length; i++)
        print_method_or_constructor(constructors[i]);

    Field[] fields = c.getDeclaredFields();
    for (int i = 0; i < fields.length; i++) {
        print_field(fields[i]);
    }
    Method[] methods = c.getDeclaredMethods();
    for (int i = 0; i < methods.length; i++)
        print_method_or_constructor(methods[i]);
    System.out.println("}");
}

From source file:natalia.dymnikova.cluster.scheduler.impl.RolesChecker.java

private boolean doCheck(final Set<String> roles, final Class<? extends Remote> aClass) {
    final Field[] declaredFields = aClass.getDeclaredFields();
    final List<TypeFilter> fields = Arrays.stream(declaredFields)
            .filter(field -> field.isAnnotationPresent(Autowired.class))
            // TODO deal with 3pp dependencies
            .filter(field -> field.getType().getPackage().getName().startsWith(basePackage)).map(Field::getType)
            .map(AssignableTypeFilter::new).collect(toList());

    final MultiValueMap<String, Object> matchAll = new LinkedMultiValueMap<>();
    matchAll.put("value", singletonList(roles.toArray(new String[roles.size()])));

    final List<Set<ScannedGenericBeanDefinition>> set = scan(basePackage, fields);

    return set.stream().map(definitions -> definitions.stream().map(def -> {
        final MultiValueMap<String, Object> map = ofNullable(
                def.getMetadata().getAllAnnotationAttributes(Profile.class.getName())).orElse(matchAll);

        //noinspection unchecked
        return ((List<String[]>) (Object) map.get("value")).stream().flatMap(Arrays::stream).collect(toList());
    }).flatMap(Collection::stream).collect(toList()))
            .allMatch(profiles -> profiles.stream().filter(roles::contains).findAny().isPresent());
}

From source file:eu.squadd.testing.objectspopulator.RandomValuePopulator.java

private Set<Field> getAllFields(Class targetClass, Predicate<Field> alwaysTrue) {
    Field[] fields = targetClass.getDeclaredFields();
    Set<Field> result = new HashSet();
    result.addAll(Arrays.asList(fields));
    return result;
}

From source file:com.adito.server.jetty.TunnelAdapter.java

private Object getPrivateMember(Object obj, String type) {

    Class secretClass = obj.getClass();

    // Print all the field names & values
    Field fields[] = secretClass.getDeclaredFields();

    if (log.isDebugEnabled())
        log.debug("Access all the fields on " + obj.getClass().getName() + " looking for type " + type);

    for (int i = 0; i < fields.length; i++) {

        if (log.isDebugEnabled())
            log.debug("Field Name: " + fields[i].getName());

        fields[i].setAccessible(true);/*from w ww .jav  a2 s . c o m*/

        try {
            Object obj2 = fields[i].get(obj);
            if (obj2 != null && obj2.getClass().getName().equals(type)) {
                return obj2;
            }
        } catch (Throwable e) {
            log.error("Failed to set timeout on SSLSocketImpl", e);
        }

    }

    log.error("Could not find " + type + " on object " + obj.getClass().getName());

    return null;
}

From source file:com.nerve.commons.repository.utils.reflection.ReflectionUtils.java

/**
 *
 * ?annotationClass//from   w  ww  .j a  va  2 s.  co  m
 *
 * @param targetClass
 *            Class
 * @param annotationClass
 *            Class
 *
 * @return List
 */
public static <T extends Annotation> List<T> getAnnotations(Class targetClass, Class annotationClass) {
    Assert.notNull(targetClass, "targetClass?");
    Assert.notNull(annotationClass, "annotationClass?");

    List<T> result = new ArrayList<T>();
    Annotation annotation = targetClass.getAnnotation(annotationClass);
    if (annotation != null) {
        result.add((T) annotation);
    }
    Constructor[] constructors = targetClass.getDeclaredConstructors();
    // ?
    CollectionUtils.addAll(result, getAnnotations(constructors, annotationClass).iterator());

    Field[] fields = targetClass.getDeclaredFields();
    // ?
    CollectionUtils.addAll(result, getAnnotations(fields, annotationClass).iterator());

    Method[] methods = targetClass.getDeclaredMethods();
    // ?
    CollectionUtils.addAll(result, getAnnotations(methods, annotationClass).iterator());

    for (Class<?> superClass = targetClass.getSuperclass(); superClass == null
            || superClass == Object.class; superClass = superClass.getSuperclass()) {
        List<T> temp = (List<T>) getAnnotations(superClass, annotationClass);
        if (CollectionUtils.isNotEmpty(temp)) {
            CollectionUtils.addAll(result, temp.iterator());
        }
    }

    return result;
}

From source file:com.billing.ng.plugin.Parameters.java

/**
 * Returns the field name of javabeans properties annotated with the
 * {@link Parameter} annotation./*from  w  ww  .  j a v a  2 s  .  c o  m*/
 *
 * @param type plugin class with parameter annotations
 * @return map of collected parameter field names and the associated annotation
 */
public Map<String, Parameter> getAnnotatedFields(Class<T> type) {
    Map<String, Parameter> fields = new HashMap<String, Parameter>();

    // collect public member methods of the class, including those defined on the interface
    // or those inherited from a super class or super interface.
    for (Method method : type.getMethods()) {
        Parameter annotation = method.getAnnotation(Parameter.class);
        if (annotation != null) {
            if (method.getName().startsWith("get") || method.getName().startsWith("set")) {
                fields.put(ClassUtils.getFieldName(method.getName()), annotation);
            }
        }
    }

    // collection all field annotations, including private fields that
    // we can to access via a public accessor method
    Class klass = type;
    while (klass != null) {
        for (Field field : klass.getDeclaredFields()) {
            Parameter annotation = field.getAnnotation(Parameter.class);
            if (annotation != null) {
                fields.put(field.getName(), annotation);
            }
        }

        // try the super class
        klass = klass.getSuperclass();
    }

    return fields;
}

From source file:org.suren.autotest.web.framework.data.YamlDataSource.java

/**
 * @param fieldMap/* w ww.  j a v  a  2s.c  om*/
 * @param targetPage
 */
private void pageParse(Map fieldMap, Page targetPage) {
    Class<? extends Page> targetPageCls = targetPage.getClass();
    Field[] decFields = targetPageCls.getDeclaredFields();
    for (Field field : decFields) {
        String name = field.getName();
        Object data = fieldMap.get(name);

        try {
            try {
                setValue(field, targetPage, data);
            } catch (NoSuchMethodException | SecurityException | InvocationTargetException e) {
                e.printStackTrace();
            }
        } catch (IllegalArgumentException | IllegalAccessException e) {
            e.printStackTrace();
        }
    }
}

From source file:atunit.spring.SpringContainer.java

protected void fillInMissingFieldBeans(Class<?> testClass, GenericApplicationContext ctx) throws Exception {
    for (Field field : testClass.getDeclaredFields()) {
        Bean beanAnno = field.getAnnotation(Bean.class);
        if (beanAnno == null)
            continue;
        String name = beanAnno.value();
        if (!name.equals("") && !ctx.containsBean(name)) {
            ctx.registerBeanDefinition(name, defineAutowireBean(field.getType()));
        } else if (ctx.getBeansOfType(field.getType()).isEmpty()) {
            BeanDefinitionReaderUtils.registerWithGeneratedName(defineAutowireBean(field.getType()), ctx);
        }//from  w  w  w.  ja v a  2s  .  co m
    }
}

From source file:kelly.core.injector.AbstractSpringInjector.java

private Field[] getFieldsIncludingSuperclass(Object bean) {
    Class<?> type = bean.getClass();
    List<Field> fields = new ArrayList<Field>();
    while (type != null) {
        fields.addAll(Arrays.asList(type.getDeclaredFields()));
        type = type.getSuperclass();/*ww w .j a v a  2  s. c  om*/
    }
    return fields.toArray(new Field[fields.size()]);
}