Example usage for java.lang.reflect Field getName

Introduction

In this page you can find the example usage for java.lang.reflect Field getName.

Prototype

public String getName()

Source Link

Document

Returns the name of the field represented by this Field object.

Usage

From source file:Main.java

/**
 * Dynamically load R.styleable.name/*w ww . jav a2 s  .  c o  m*/
 * @param context
 * @param name
 * @return
 */
public static int getStyleableResourceInt(Context context, String name) {
    if (context == null)
        return 0;
    try {
        //use reflection to access the resource class
        Field[] fields2 = Class.forName(context.getPackageName() + ".R$styleable").getFields();

        //browse all fields
        for (Field f : fields2) {
            //pick matching field
            if (f.getName().equals(name)) {
                //return as int array
                int ret = (Integer) f.get(null);
                return ret;
            }
        }
    } catch (Throwable t) { /*no op*/
    }
    return 0;
}

From source file:Main.java

/**
 * Get a Hashtable of all class member fields (including private) of the
 * given object/*www . j  ava2  s  . c  o  m*/
 * 
 * @param objectInstance Object to get data from
 * @return Hashtable of all values
 * 
 * @throws IllegalArgumentException
 * @throws IllegalAccessException
 */
public static Map<String, Object> getAllFields(Object objectInstance)
        throws IllegalArgumentException, IllegalAccessException // NOSONAR
{
    HashMap<String, Object> map = new HashMap<String, Object>();

    Class<? extends Object> clazz = objectInstance.getClass();

    Field fields[] = clazz.getDeclaredFields();
    for (int i = 0; i < fields.length; i++) {
        Field f = fields[i];
        f.setAccessible(true);

        String fieldName = f.getName();
        Object fieldValue = f.get(objectInstance);

        map.put(fieldName, fieldValue);
    }

    return map;
}

From source file:Main.java

public static Method findIsSelectedMethodForField(Field field, Class<?> objectClass)
        throws NoSuchMethodException {
    String methodName = "is" + field.getName().toUpperCase().substring(0, 1) + field.getName().substring(1)
            + "Selected";
    return objectClass.getMethod(methodName, (java.lang.Class[]) null);
}

From source file:Main.java

/**
 * Returns the Jarvis Api Version or -1 if it is not supported
 * @return api version//from  ww  w . j  a  v  a  2s .c o  m
 */
public static int getJarvisApiVersion() {
    Field[] declaredFields = Build.class.getDeclaredFields();
    for (Field field : declaredFields) {
        if (Modifier.isStatic(field.getModifiers()) && field.getName().equals("JARVIS_VERSION")) {
            try {
                return field.getInt(null);
            } catch (IllegalAccessException ex) {
                ex.printStackTrace();
            } catch (IllegalArgumentException ex) {
                ex.printStackTrace();
            }
        }
    }
    return -1;
}

From source file:Main.java

/*********************************************************************************
 *   Returns the resource-IDs for all attributes specified in the
 *   given <declare-styleable>-resource tag as an int array.
 *
 *   @param  context     The current application context.
 *   @param  name        The name of the <declare-styleable>-resource-tag to pick.
 *   @return             All resource-IDs of the child-attributes for the given
 *                       <declare-styleable>-resource or <code>null</code> if
 *                       this tag could not be found or an error occured.
 *********************************************************************************/
public static final int[] getResourceDeclareStyleableIntArray(Context context, String name) {
    try {/*from   w w  w.j  a va 2s. c  o m*/
        //use reflection to access the resource class
        Field[] fields2 = Class.forName(context.getPackageName() + ".R$styleable").getFields();

        //browse all fields
        for (Field f : fields2) {
            //pick matching field
            if (f.getName().equals(name)) {
                //return as int array
                int[] ret = (int[]) f.get(null);
                return ret;
            }
        }
    } catch (Throwable t) {
    }

    return null;
}

From source file:Main.java

/**
 * Returns a {@code Class} object that identifies the
 * declared class for the field represented by the given {@code String name} parameter inside
 * the invoked {@code Class<?> clazz} parameter.
 *
 * @param clazz the {@code Class} object whose declared fields to be
 *       checked for a certain field.//w  w  w .  j  av  a 2s .  co m
 * @param name the field name as {@code String} to be
 *       compared with {@link Field#getName()}
 * @return the {@code Class} object representing the type of given field name.
 *
 * @see {@link Class#getDeclaredFields()}
 * @see {@link Field#getType()}
 */
public static Class<?> getFieldClass(Class<?> clazz, String name) {
    if (clazz == null || name == null || name.isEmpty()) {
        return null;
    }

    Class<?> propertyClass = null;

    for (Field field : clazz.getDeclaredFields()) {
        field.setAccessible(true);
        if (field.getName().equalsIgnoreCase(name)) {
            propertyClass = field.getType();
            break;
        }
    }

    return propertyClass;
}

From source file:Main.java

/**
 * @param type//from  ww w.ja v a  2  s . com
 * @param object
 * @param field
 * @param value
 */
public static <T> void setFieldValue(Class<? extends T> type, T object, Field field, Object value) {
    try {
        Method m = type.getMethod("set" + getFirstLetterUppercased(field.getName()), field.getType());
        m.invoke(object, value);
    } catch (Exception e) {
    }
}

From source file:Main.java

public static Object getProperty(Object o, String field) {
    try {// w ww  . j ava  2  s . co m
        Field f = o.getClass().getDeclaredField(field);
        f.setAccessible(true);
        String name = f.getName();
        name = name.replaceFirst(name.substring(0, 1), name.substring(0, 1).toUpperCase(Locale.US));
        Method m = o.getClass().getMethod("get" + name);
        // return f.get(o);
        return (Object) m.invoke(o);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static String[][] returnTable(Collection E) {
    if ((E == null) || E.isEmpty()) {
        System.out.println("The collection is empty!");
    }//from   w  w w. j  av  a  2 s . c o m

    Set<Field> collectionFields = new TreeSet<>(new Comparator<Field>() {
        @Override
        public int compare(Field o1, Field o2) {
            return o1.getName().compareTo(o2.getName());
        }
    });
    for (Object o : E) {
        Class c = o.getClass();
        createSetOfFields(collectionFields, c);
        while (c.getSuperclass() != null) {
            c = c.getSuperclass();
            createSetOfFields(collectionFields, c);
        }
    }
    String[][] exitText = new String[E.size() + 1][collectionFields.size() + 1];
    exitText[0][0] = String.format("%20s", "Class");
    int indexOfColumn = 0;
    for (Field f : collectionFields) {
        exitText[0][indexOfColumn + 1] = String.format("%20s", f.getName());
        indexOfColumn++;

    }
    int indexOfRow = 0;
    for (Object o : E) {
        indexOfColumn = 0;
        exitText[indexOfRow + 1][0] = String.format("%20s", o.getClass().getSimpleName());
        for (Field field : collectionFields) {
            try {
                field.setAccessible(true);
                if (field.get(o) instanceof Date) {
                    exitText[indexOfRow + 1][indexOfColumn + 1] = String.format("%20tD", field.get(o));
                } else {
                    String temp = String.valueOf(field.get(o));
                    exitText[indexOfRow + 1][indexOfColumn + 1] = String.format("%20s", temp);
                }
            } catch (Exception e) {
                exitText[indexOfRow + 1][indexOfColumn + 1] = String.format("%20s", "-");
            }
            indexOfColumn++;
        }
        indexOfRow++;
    }
    return exitText;
}

From source file:Main.java

public static Field findFiledWithName(Field[] fields, String filedName) {
    if (fields != null) {
        for (Field field : fields) {
            field.setAccessible(true);//from  w w  w. j  ava  2  s . com
            if (field.getName().equals(filedName)) {
                return field;
            }
        }
    }
    return null;
}