Example usage for java.lang.reflect Field getModifiers

Introduction

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

Prototype

public int getModifiers()

Source Link

Document

Returns the Java language modifiers for the field represented by this Field object, as an integer.

Usage

From source file:Main.java

/**
 * set attribute is accessible/*from   w  ww. j ava2s.  c om*/
 * 
 * @param field {@link java.lang.reflect.Field}
 */
public static void makeAccessible(final Field field) {
    if (!Modifier.isPublic(field.getModifiers())
            || !Modifier.isPublic(field.getDeclaringClass().getModifiers())) {
        field.setAccessible(true);
    }
}

From source file:edu.cornell.mannlib.vitro.webapp.edit.n3editing.configuration.EditConfigurationConstants.java

public static Map<String, String> exportConstants() {
    Map<String, String> constants = new HashMap<String, String>();
    java.lang.reflect.Field[] fields = EditConfigurationConstants.class.getDeclaredFields();
    for (java.lang.reflect.Field f : fields) {
        if (Modifier.isStatic(f.getModifiers()) && Modifier.isPublic(f.getModifiers())) {
            try {
                constants.put(f.getName(), f.get(null).toString());
            } catch (Exception ex) {
                log.error("An exception occurred in trying to retrieve this field ", ex);
            }//from   www  . ja va 2  s  . c  o m
        }
    }
    return constants;
}

From source file:Main.java

/**
 * Returns the Jarvis Api Version or -1 if it is not supported
 * @return api version//from  w  ww . j  a v  a  2s .  co 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

/**
 * Stores the classes 'static final' field values as a map.
 * //from  w  w  w  . j  a v  a  2  s  . c o m
 * @param clazz
 *            The class containing static field values.
 * @return A map keyed by static field name to value.
 */
public static Map<String, Object> constantsAsMap(Class<?> clazz) {
    try {
        final Map<String, Object> constants = new HashMap<String, Object>();
        final int staticFinalMods = Modifier.STATIC | Modifier.FINAL;
        for (Field field : clazz.getFields()) {
            if (staticFinalMods == (field.getModifiers() & staticFinalMods)) {
                // this is a constant!
                constants.put(field.getName(), field.get(null));
            }
        }

        return constants;
    } catch (Exception e) {
        // wrap in general error
        throw new IllegalStateException("Unable to initialize class constants for: " + clazz);
    }
}

From source file:Main.java

public static void printFields(Class cl) {
    Field[] fields = cl.getDeclaredFields();

    for (int i = 0; i < fields.length; i++) {
        Field f = fields[i];
        Class type = f.getType();
        String name = f.getName();
        System.out.print(Modifier.toString(f.getModifiers()));
        System.out.println(" " + type.getName() + " " + name + ";");
    }/*w  w w  . j  ava2s.  c  o m*/
}

From source file:Main.java

private static Field getSingletonField(Class<?> hostClas) {
    Field f = null;
    try {//from  www . ja v a  2 s  .  c o m
        f = hostClas.getDeclaredField("I");
        if (!Modifier.isStatic(f.getModifiers()))
            throw new Exception("'I' field should be static." + f);
        f.setAccessible(true);
    } catch (Throwable ex) {
    }
    return f;
}

From source file:Main.java

/**
 * Key to lowercase String, extracts the effective key that was pressed
 * (without shift, control, alt)// w  ww  .  jav a  2 s.c om
 */
public static String getKeyText(KeyEvent e) {
    // special cases
    if (e.getKeyCode() == KeyEvent.VK_DELETE) {
        return "delete";
    }
    // prio 1: get text of unresolved code (shift-1 --> '1')
    String s = "" + e.getKeyChar();
    if (e.getKeyCode() > 0) {
        int flags = Modifier.PUBLIC | Modifier.STATIC | Modifier.FINAL;
        for (Field f : KeyEvent.class.getFields()) {
            if ((f.getModifiers() & flags) == flags) {
                try {
                    if (f.getName().startsWith("VK_") && ((Integer) f.get(null)) == e.getKeyCode()) {
                        s = f.getName().substring(3).toLowerCase();
                        break;
                    }
                } catch (Throwable t) {
                    // nop
                }
            }
        }
    }
    if (s.length() != 1) {
        // prio 2: check if the resolved char is valid (shift-1 --> '+')
        if (e.getKeyChar() >= 32 && e.getKeyChar() < 128) {
            s = "" + e.getKeyChar();
        }
    }
    return s.toLowerCase();
}

From source file:Main.java

public static Map<String, Object> optPublicFieldKeyValueMap(Object obj) {
    Map<String, Object> map = new HashMap<String, Object>();
    if (obj != null) {
        Field[] fields = obj.getClass().getFields();
        for (Field f : fields) {
            try {
                boolean isStatic = Modifier.isStatic(f.getModifiers());
                if (!isStatic) {
                    Object value = f.get(obj);
                    if (value != null)
                        map.put(f.getName(), value);
                }//from w w  w . j  av  a 2s. c  om
            } catch (Exception e) {

            }
        }
    }
    return map;
}

From source file:com.greenline.hrs.admin.util.db.SchemaExport.java

public static String exportMySQL(Class type) {
    if (type == null) {
        return StringUtils.EMPTY;
    }/*from  w  w w .ja  va 2s.  c o m*/
    String tableName = type.getName().substring(type.getName().lastIndexOf('.') + 1);
    tableName = StringUtil.underscoreName(tableName);
    StringBuilder sb = new StringBuilder();
    sb.append("DROP TABLE IF EXISTS `" + tableName + "`;" + LINUX_LINE_DELIMITER);
    sb.append("CREATE TABLE `");
    sb.append(tableName);
    sb.append("` (" + LINUX_LINE_DELIMITER + LINUX_LINE_DELIMITER);
    sb.append("`id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT '',");
    Field[] fields = type.getDeclaredFields();
    for (Field field : fields) {
        if (!Modifier.isStatic(field.getModifiers())) {
            sb.append("`" + StringUtil.underscoreName(field.getName()) + "` "
                    + JdbcColumnUtil.getColumeTypeDesc(field.getType()) + " NOT NULL COMMENT '',"
                    + LINUX_LINE_DELIMITER);
        }
    }
    sb.append("PRIMARY KEY (`id`)" + LINUX_LINE_DELIMITER);
    sb.append(") ENGINE=InnoDB DEFAULT CHARSET=utf8;");
    return sb.toString();
}

From source file:Main.java

/**
 * get all fields for a class//  www.ja  va 2 s  .c  om
 *
 * @param type
 * @return all fields indexed by their names
 */
private static Map<String, Field> getAllFields(Class<?> type) {
    Map<String, Field> fields = new HashMap<String, Field>();
    Class<?> currentType = type;
    while (!currentType.equals(Object.class)) {
        for (Field field : currentType.getDeclaredFields()) {
            int mod = field.getModifiers();
            /*
             * by convention, our fields should not have any modifier
             */
            if (mod == 0 || Modifier.isProtected(mod) && !Modifier.isStatic(mod)) {
                fields.put(field.getName(), field);
            }
        }
        currentType = currentType.getSuperclass();
    }
    return fields;
}