public static Field findField(Class cls,
    String name,
    boolean mustExist) 
{
        try {
            Field f;
            for (Class c = cls; c != null && c != Object.class;
                c = c.getSuperclass()) {
                f = getDeclaredField(c, name);
                if (f != null)
                    return f;
            }
        } catch (Exception e) {
            throw new GeneralException(e);
        }
        if (mustExist)
            throw new UserException(_loc.get("bad-field", cls, name));
        return null;
}

Return the field with the given name, optionally throwing an exception if none.

 public static Method findGetter(Class cls,
    String prop,
    boolean mustExist) 
{
                        
        prop = StringUtils.capitalize(prop);
        String name = "get" + prop;
        Method m;
        try {
            // this algorithm searches for a get< prop > or is< prop > method in
            // a breadth-first manner.
            for (Class c = cls; c != null && c != Object.class;
                c = c.getSuperclass()) {
                m = getDeclaredMethod(c, name, null);
                if (m != null) {
                    return m;
                } else {
                    m = getDeclaredMethod(c, "is" + prop, null);
                    if (m != null && (m.getReturnType() == boolean.class
                        || m.getReturnType() == Boolean.class))
                        return m;
                }
            }
        } catch (Exception e) {
            throw new GeneralException(e);
        }
        if (mustExist)
            throw new UserException(_loc.get("bad-getter", cls, prop));
        return null;
}

Return the getter method matching the given property name, optionally throwing an exception if none.

 public static Method findSetter(Class cls,
    String prop,
    boolean mustExist) 
{
        Method getter = findGetter(cls, prop, mustExist);
        return (getter == null) ? null 
            : findSetter(cls, prop, getter.getReturnType(), mustExist);
}

Return the setter method matching the given property name, optionally throwing an exception if none. The property must also have a getter.

 public static Method findSetter(Class cls,
    String prop,
    Class param,
    boolean mustExist) 
{
        String name = "set" + StringUtils.capitalize(prop);
        Method m;
        try {
            for (Class c = cls; c != null && c != Object.class;
                c = c.getSuperclass()) {
                m = getDeclaredMethod(c, name, param);
                if (m != null)
                    return m;
            }
        } catch (Exception e) {
            throw new GeneralException(e);
        }
        if (mustExist)
            throw new UserException(_loc.get("bad-setter", cls, prop));
        return null;
}

Return the setter method matching the given property name, optionally throwing an exception if none.

 public static Object get(Object target,
    Field field) 
{
        if (target == null || field == null)
            return null;
        makeAccessible(field, field.getModifiers());
        try {
            return field.get(target);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Return the value of the given field in the given object.

 public static Object get(Object target,
    Method getter) 
{
        if (target == null || getter == null)
            return null;
        makeAccessible(getter, getter.getModifiers());
        try {
            return getter.invoke(target, (Object[]) null);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Return the return value of the given getter in the given object.

 public static boolean getBoolean(Object target,
    Field field) 
{
        if (target == null || field == null)
            return false;
        makeAccessible(field, field.getModifiers());
        try {
            return field.getBoolean(target);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Return the value of the given field in the given object.

 public static boolean getBoolean(Object target,
    Method getter) 
{
        Object o = get(target, getter);
        return (o == null) ? false : ((Boolean) o).booleanValue();
}

Return the return value of the given getter in the given object.

 public static byte getByte(Object target,
    Field field) 
{
        if (target == null || field == null)
            return (byte) 0;
        makeAccessible(field, field.getModifiers());
        try {
            return field.getByte(target);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Return the value of the given field in the given object.

 public static byte getByte(Object target,
    Method getter) 
{
        Object o = get(target, getter);
        return (o == null) ? (byte) 0 : ((Number) o).byteValue();
}

Return the return value of the given getter in the given object.

 public static char getChar(Object target,
    Field field) 
{
        if (target == null || field == null)
            return (char) 0;
        makeAccessible(field, field.getModifiers());
        try {
            return field.getChar(target);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Return the value of the given field in the given object.

 public static char getChar(Object target,
    Method getter) 
{
        Object o = get(target, getter);
        return (o == null) ? (char) 0 : ((Character) o).charValue();
}

Return the return value of the given getter in the given object.

 static Method getDeclaredMethod(Class cls,
    String name,
    Class param) 
{
        Method[] methods = (Method[]) AccessController.doPrivileged(
            J2DoPrivHelper.getDeclaredMethodsAction(cls));
        Method candidate = null;
        for (int i = 0 ; i <  methods.length; i++) {
    	    if (name.equals(methods[i].getName())) {
                Class[] methodParams = methods[i].getParameterTypes();
                if (param == null && methodParams.length == 0)
                    candidate = mostDerived(methods[i], candidate);
                else if (param != null && methodParams.length == 1
                    && param.equals(methodParams[0]))
                    candidate = mostDerived(methods[i], candidate);
            }
        }
        return candidate;
}

Invokes cls.getDeclaredMethods(), and returns the method that matches the name and param arguments. Avoids the exception thrown by Class.getDeclaredMethod() for performance reasons. param may be null. Additionally, if there are multiple methods with different return types, this will return the method defined in the least-derived class.

 public static double getDouble(Object target,
    Field field) 
{
        if (target == null || field == null)
            return 0D;
        makeAccessible(field, field.getModifiers());
        try {
            return field.getDouble(target);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Return the value of the given field in the given object.

 public static double getDouble(Object target,
    Method getter) 
{
        Object o = get(target, getter);
        return (o == null) ? 0D : ((Number) o).doubleValue();
}

Return the return value of the given getter in the given object.

 public static float getFloat(Object target,
    Field field) 
{
        if (target == null || field == null)
            return 0F;
        makeAccessible(field, field.getModifiers());
        try {
            return field.getFloat(target);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Return the value of the given field in the given object.

 public static float getFloat(Object target,
    Method getter) 
{
        Object o = get(target, getter);
        return (o == null) ? 0F : ((Number) o).floatValue();
}

Return the return value of the given getter in the given object.

 public static int getInt(Object target,
    Field field) 
{
        if (target == null || field == null)
            return 0;
        makeAccessible(field, field.getModifiers());
        try {
            return field.getInt(target);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Return the value of the given field in the given object.

 public static int getInt(Object target,
    Method getter) 
{
        Object o = get(target, getter);
        return (o == null) ? 0 : ((Number) o).intValue();
}

Return the return value of the given getter in the given object.

 public static long getLong(Object target,
    Field field) 
{
        if (target == null || field == null)
            return 0L;
        makeAccessible(field, field.getModifiers());
        try {
            return field.getLong(target);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Return the value of the given field in the given object.

 public static long getLong(Object target,
    Method getter) 
{
        Object o = get(target, getter);
        return (o == null) ? 0L : ((Number) o).longValue();
}

Return the return value of the given getter in the given object.

 public static short getShort(Object target,
    Field field) 
{
        if (target == null || field == null)
            return (short) 0;
        makeAccessible(field, field.getModifiers());
        try {
            return field.getShort(target);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Return the value of the given field in the given object.

 public static short getShort(Object target,
    Method getter) 
{
        Object o = get(target, getter);
        return (o == null) ? (short) 0 : ((Number) o).shortValue();
}

Return the return value of the given getter in the given object.

 static Method mostDerived(Method meth1,
    Method meth2) 
{
        if (meth1 == null)
            return meth2;
        if (meth2 == null)
            return meth1;
        Class cls2 = meth2.getDeclaringClass();
        Class cls1 = meth1.getDeclaringClass();
        if (cls1.equals(cls2)) {
            Class ret1 = meth1.getReturnType();
            Class ret2 = meth2.getReturnType();
            if (ret1.isAssignableFrom(ret2))
                return meth2;
            else if (ret2.isAssignableFrom(ret1))
                return meth1;
            else
                throw new IllegalArgumentException(
                    _loc.get("most-derived-unrelated-same-type", meth1, meth2)
                        .getMessage());
        } else {
            if (cls1.isAssignableFrom(cls2))
                return meth2;
            else if (cls2.isAssignableFrom(cls1))
                return meth1;
            else
                throw new IllegalArgumentException(
                    _loc.get("most-derived-unrelated", meth1, meth2)
                        .getMessage());
        }
}

 public static  void set(Object target,
    Field field,
    Object value) 
{
        if (target == null || field == null)
            return;
        makeAccessible(field, field.getModifiers());
        try {
            field.set(target, value);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Set the value of the given field in the given object.

 public static  void set(Object target,
    Field field,
    boolean value) 
{
        if (target == null || field == null)
            return;
        makeAccessible(field, field.getModifiers());
        try {
            field.setBoolean(target, value);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Set the value of the given field in the given object.

 public static  void set(Object target,
    Field field,
    byte value) 
{
        if (target == null || field == null)
            return;
        makeAccessible(field, field.getModifiers());
        try {
            field.setByte(target, value);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Set the value of the given field in the given object.

 public static  void set(Object target,
    Field field,
    char value) 
{
        if (target == null || field == null)
            return;
        makeAccessible(field, field.getModifiers());
        try {
            field.setChar(target, value);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Set the value of the given field in the given object.

 public static  void set(Object target,
    Field field,
    double value) 
{
        if (target == null || field == null)
            return;
        makeAccessible(field, field.getModifiers());
        try {
            field.setDouble(target, value);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Set the value of the given field in the given object.

 public static  void set(Object target,
    Field field,
    float value) 
{
        if (target == null || field == null)
            return;
        makeAccessible(field, field.getModifiers());
        try {
            field.setFloat(target, value);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Set the value of the given field in the given object.

 public static  void set(Object target,
    Field field,
    int value) 
{
        if (target == null || field == null)
            return;
        makeAccessible(field, field.getModifiers());
        try {
            field.setInt(target, value);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Set the value of the given field in the given object.

 public static  void set(Object target,
    Field field,
    long value) 
{
        if (target == null || field == null)
            return;
        makeAccessible(field, field.getModifiers());
        try {
            field.setLong(target, value);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Set the value of the given field in the given object.

 public static  void set(Object target,
    Field field,
    short value) 
{
        if (target == null || field == null)
            return;
        makeAccessible(field, field.getModifiers());
        try {
            field.setShort(target, value);
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Set the value of the given field in the given object.

 public static  void set(Object target,
    Object value,
    Field field) 
{
        set(target, field, value);
}

Set the value of the given field in the given object. Same behavior as above methods, but parameter ordering is rearranged to simplify usage from generated bytecodes.

 public static  void set(Object target,
    boolean value,
    Field field) 
{
        set(target, field, value);
}

Set the value of the given field in the given object. Same behavior as above methods, but parameter ordering is rearranged to simplify usage from generated bytecodes.

 public static  void set(Object target,
    byte value,
    Field field) 
{
        set(target, field, value);
}

Set the value of the given field in the given object. Same behavior as above methods, but parameter ordering is rearranged to simplify usage from generated bytecodes.

 public static  void set(Object target,
    char value,
    Field field) 
{
        set(target, field, value);
}

Set the value of the given field in the given object. Same behavior as above methods, but parameter ordering is rearranged to simplify usage from generated bytecodes.

 public static  void set(Object target,
    double value,
    Field field) 
{
        set(target, field, value);
}

Set the value of the given field in the given object. Same behavior as above methods, but parameter ordering is rearranged to simplify usage from generated bytecodes.

 public static  void set(Object target,
    float value,
    Field field) 
{
        set(target, field, value);
}

Set the value of the given field in the given object. Same behavior as above methods, but parameter ordering is rearranged to simplify usage from generated bytecodes.

 public static  void set(Object target,
    int value,
    Field field) 
{
        set(target, field, value);
}

Set the value of the given field in the given object. Same behavior as above methods, but parameter ordering is rearranged to simplify usage from generated bytecodes.

 public static  void set(Object target,
    long value,
    Field field) 
{
        set(target, field, value);
}

Set the value of the given field in the given object. Same behavior as above methods, but parameter ordering is rearranged to simplify usage from generated bytecodes.

 public static  void set(Object target,
    short value,
    Field field) 
{
        set(target, field, value);
}

Set the value of the given field in the given object. Same behavior as above methods, but parameter ordering is rearranged to simplify usage from generated bytecodes.

 public static  void set(Object target,
    Method setter,
    Object value) 
{
        if (target == null || setter == null)
            return;
        makeAccessible(setter, setter.getModifiers());
        try {
            setter.invoke(target, new Object[] { value });
        } catch (Throwable t) {
            throw wrapReflectionException(t);
        }
}

Invoke the given setter on the given object.

 public static  void set(Object target,
    Method setter,
    boolean value) 
{
        set(target, setter, (value) ? Boolean.TRUE : Boolean.FALSE);
}

Invoke the given setter on the given object.

 public static  void set(Object target,
    Method setter,
    byte value) 
{
        set(target, setter, new Byte(value));
}

Invoke the given setter on the given object.

 public static  void set(Object target,
    Method setter,
    char value) 
{
        set(target, setter, new Character(value));
}

Invoke the given setter on the given object.

 public static  void set(Object target,
    Method setter,
    double value) 
{
        set(target, setter, new Double(value));
}

Invoke the given setter on the given object.

 public static  void set(Object target,
    Method setter,
    float value) 
{
        set(target, setter, new Float(value));
}

Invoke the given setter on the given object.

 public static  void set(Object target,
    Method setter,
    int value) 
{
        set(target, setter, new Integer(value));
}

Invoke the given setter on the given object.

 public static  void set(Object target,
    Method setter,
    long value) 
{
        set(target, setter, new Long(value));
}

Invoke the given setter on the given object.

 public static  void set(Object target,
    Method setter,
    short value) 
{
        set(target, setter, new Short(value));
}

Invoke the given setter on the given object.