Example usage for java.lang.reflect Modifier FINAL

Introduction

In this page you can find the example usage for java.lang.reflect Modifier FINAL.

Prototype

int FINAL

To view the source code for java.lang.reflect Modifier FINAL.

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Document

The int value representing the final modifier.

Usage

From source file:Main.java

public static void main(String... args) throws Exception {
    Class<?> c = Class.forName("java.lang.String");
    Constructor[] allConstructors = c.getDeclaredConstructors();
    for (Constructor ctor : allConstructors) {
        int searchMod = Modifier.FINAL;
        int mods = accessModifiers(ctor.getModifiers());
        if (searchMod == mods) {
            System.out.println(ctor);
        }//from   ww w  .  java  2 s  .c  om
    }
}

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From source file:Main.java

public static boolean fieldCanBeModify(Field field) {
    return field != null && ((field.getModifiers() & Modifier.FINAL) == 0);
}

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From source file:Main.java

private static int accessModifiers(int m) {
    return m & Modifier.FINAL;
}

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From source file:Main.java

/**
 * Stores the classes 'static final' field values as a map.
 * //from  w  w w . j a v  a  2s.  c  om
 * @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);
    }
}

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From source file:me.hurel.hqlbuilder.internal.ProxyUtil.java

public static boolean isFinal(Class<?> objectClass) {
    return (Modifier.FINAL & objectClass.getModifiers()) == Modifier.FINAL;
}

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From source file:Main.java

/**
 * Key to lowercase String, extracts the effective key that was pressed
 * (without shift, control, alt)//from w w w.  j  ava  2s  . c  o  m
 */
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();
}

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From source file:ReflectionHelper.java

/**
 * Set the value of the field of the object to the given value.
 * //w  ww . j  av  a2  s. c o  m
 * @param original
 *            object to modify
 * @param field
 *            field to modify
 * @param value
 *            new value for the given object and field
 * @throws NoSuchFieldException
 * @throws IllegalAccessException
 */
public static void setStaticFinalField(Object original, Field field, Object value)
        throws NoSuchFieldException, IllegalAccessException {
    // we mark the field to be public
    field.setAccessible(true);
    // next we change the modifier in the Field instance to
    // not be final anymore, thus tricking reflection into
    // letting us modify the static final field
    Field modifiersField = Field.class.getDeclaredField(MODIFIERS_FIELD);
    modifiersField.setAccessible(true);
    int modifiers = modifiersField.getInt(field);
    // blank out the final bit in the modifiers int
    modifiers &= ~Modifier.FINAL;
    modifiersField.setInt(field, modifiers);
    FieldAccessor fa = reflection.newFieldAccessor(field, false);
    fa.set(original, value);
}

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From source file:testinfrastructure.testutils.LogInjector.java

private static void setFinalStaticField(Field field, Object newValue) {
    try {//w w  w . j  a v  a  2  s.c o m
        field.setAccessible(true);

        Field modifiersField = Field.class.getDeclaredField("modifiers");
        modifiersField.setAccessible(true);
        modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);

        field.set(null, newValue);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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From source file:org.lanternpowered.server.util.ReflectionHelper.java

public static void setField(Field field, @Nullable Object target, @Nullable Object object) throws Exception {
    final int modifiers = field.getModifiers();
    if (Modifier.isFinal(modifiers)) {
        MODIFIERS_FIELD.set(field, modifiers & ~Modifier.FINAL);
    }// w ww .  j a va2  s. c om
    field.setAccessible(true);
    field.set(target, object);
}

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From source file:org.apache.kylin.rest.DebugTomcat.java

public static void setupDebugEnv() {
    try {/*w  ww . j a v a2  s  .  c  om*/
        System.setProperty("log4j.configuration", "file:../build/conf/kylin-tools-log4j.properties");

        // test_case_data/sandbox/ contains HDP 2.2 site xmls which is dev sandbox
        KylinConfig.setSandboxEnvIfPossible();
        overrideDevJobJarLocations();

        System.setProperty("spring.profiles.active", "testing");

        //avoid log permission issue
        if (System.getProperty("catalina.home") == null)
            System.setProperty("catalina.home", ".");

        if (StringUtils.isEmpty(System.getProperty("hdp.version"))) {
            System.err.println(
                    "No hdp.version set; Please set hdp.version in your jvm option, for example: -Dhdp.version=2.4.0.0-169");
            System.exit(1);
        }

        // workaround for job submission from win to linux -- https://issues.apache.org/jira/browse/MAPREDUCE-4052
        if (Shell.WINDOWS) {
            {
                Field field = Shell.class.getDeclaredField("WINDOWS");
                field.setAccessible(true);
                Field modifiersField = Field.class.getDeclaredField("modifiers");
                modifiersField.setAccessible(true);
                modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
                field.set(null, false);
            }
            {
                Field field = java.io.File.class.getDeclaredField("pathSeparator");
                field.setAccessible(true);
                Field modifiersField = Field.class.getDeclaredField("modifiers");
                modifiersField.setAccessible(true);
                modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
                field.set(null, ":");
            }
        }
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

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