Example usage for java.lang Class isArray

Introduction

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

Prototype

@HotSpotIntrinsicCandidate
public native boolean isArray();

Source Link

Document

Determines if this Class object represents an array class.

Usage

From source file:Main.java

/**
 * @return Null if class might be a bean; type String (that identifies
 *   why it's not a bean) if not/*from   w  ww.ja v a  2  s  . c  o  m*/
 */
public static String canBeABeanType(Class<?> type) {
    // First: language constructs that ain't beans:
    if (type.isAnnotation()) {
        return "annotation";
    }
    if (type.isArray()) {
        return "array";
    }
    if (type.isEnum()) {
        return "enum";
    }
    if (type.isPrimitive()) {
        return "primitive";
    }

    // Anything else? Seems valid, then
    return null;
}

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From source file:com.nec.nsgui.model.biz.cifs.NSBeanUtil.java

/**
*  The bean members' type is limited to String and String[]
*//*from ww w.  ja v a2 s . co  m*/
public static void setProperties(Object bean, String[] valueArray, String delimiter) throws Exception {
    if (bean == null || valueArray == null || valueArray.length == 0) {
        return;
    }
    Map map = new TreeMap();
    for (int i = 0; i < valueArray.length; i++) {
        String keyAndValue = valueArray[i];
        if (keyAndValue == null || keyAndValue.indexOf(KEY_VALUE_SPLITER) == -1) {
            continue;
        } else {
            String[] tmpArray = valueArray[i].split(KEY_VALUE_SPLITER, 2);
            String key = tmpArray[0].trim();
            if (delimiter != null) {
                PropertyDescriptor descriptor = PropertyUtils.getPropertyDescriptor(bean, key);
                Class propertyType = descriptor.getPropertyType();
                if (propertyType.isArray()) {
                    String[] values = tmpArray[1].split(delimiter);
                    map.put(key, values);
                    continue;
                }
            }
            String value = tmpArray[1];
            map.put(key, value);
        }
    }
    if (map.size() > 0) {
        BeanUtils.populate(bean, map);
    }
    return;
}

---

From source file:Main.java

/**
 * Extracts the package name from the given class object
 *//*from   www  . j  a v  a 2 s  . c o m*/
public static String getPackage(Class<?> cls) {
    // cls.getPackage() sometimes returns null, in which case fall back to string massaging.
    java.lang.Package pkg = cls.isArray() ? cls.getComponentType().getPackage() : cls.getPackage();
    if (pkg == null) {
        int dotPos;
        int dolPos = cls.getName().indexOf('$');
        if (dolPos > 0) {
            // we have nested classes, so adjust dotpos to before first $
            dotPos = cls.getName().substring(0, dolPos).lastIndexOf('.');
        } else {
            dotPos = cls.getName().lastIndexOf('.');
        }

        if (dotPos > 0) {
            return cls.getName().substring(0, dotPos);
        } else {
            // must be default package.
            return "";
        }
    } else {
        return pkg.getName();
    }
}

---

From source file:Main.java

/**
 * Returns a class name without "java.lang." and "java.util." prefix, also shows array types in a format like
 * {@code int[]}; useful for printing class names in error messages.
 * /*from ww  w . j av a2 s  .c  o m*/
 * @param pClass can be {@code null}, in which case the method returns {@code null}.
 * @param shortenFreeMarkerClasses if {@code true}, it will also shorten FreeMarker class names. The exact rules
 *     aren't specified and might change over time, but right now, {@code freemarker.ext.beans.NumberModel} for
 *     example becomes to {@code f.e.b.NumberModel}. 
 * 
 * @since 2.3.20
 */
public static String getShortClassName(Class pClass, boolean shortenFreeMarkerClasses) {
    if (pClass == null) {
        return null;
    } else if (pClass.isArray()) {
        return getShortClassName(pClass.getComponentType()) + "[]";
    } else {
        String cn = pClass.getName();
        if (cn.startsWith("java.lang.") || cn.startsWith("java.util.")) {
            return cn.substring(10);
        } else {
            if (shortenFreeMarkerClasses) {
                if (cn.startsWith("freemarker.template.")) {
                    return "f.t" + cn.substring(19);
                } else if (cn.startsWith("freemarker.ext.beans.")) {
                    return "f.e.b" + cn.substring(20);
                } else if (cn.startsWith("freemarker.core.")) {
                    return "f.c" + cn.substring(15);
                } else if (cn.startsWith("freemarker.ext.")) {
                    return "f.e" + cn.substring(14);
                } else if (cn.startsWith("freemarker.")) {
                    return "f" + cn.substring(10);
                }
                // Falls through
            }
            return cn;
        }
    }
}

---

From source file:Main.java

public static String getDesc(Class<?> paramClass) {
    if (paramClass.isPrimitive()) {
        return getPrimitiveLetter(paramClass);
    }//from www .j  a v  a 2s .c  om
    if (paramClass.isArray()) {
        return "[" + getDesc(paramClass.getComponentType());
    }
    return "L" + getType(paramClass) + ";";
}

---

From source file:com.google.api.server.spi.ObjectMapperUtil.java

private static boolean isEmpty(Object value) {
    Class<?> clazz = value.getClass();
    if (clazz.isArray()) {
        int len = Array.getLength(value);
        for (int i = 0; i < len; i++) {
            Object element = Array.get(value, i);
            if (element != null && !isEmpty(element)) {
                return false;
            }/*from w w w.  j  av a2 s.c o m*/
        }
        return true;
    } else if (Collection.class.isAssignableFrom(clazz)) {
        Collection<?> c = (Collection<?>) value;
        for (Object element : c) {
            if (element != null && !isEmpty(element)) {
                return false;
            }
        }
        return true;
    } else if (Map.class.isAssignableFrom(clazz)) {
        Map<?, ?> m = (Map<?, ?>) value;
        for (Object entryValue : m.values()) {
            if (entryValue != null && !isEmpty(entryValue)) {
                return false;
            }
        }
        return true;
    }
    return false;
}

---

From source file:ClassUtils.java

/**
 * Return the qualified name of the given class: usually simply
 * the class name, but component type class name + "[]" for arrays.
 * @param clazz the class/*  w  w  w. j  ava2 s .c  o  m*/
 * @return the qualified name of the class
 */
public static String getQualifiedName(Class clazz) {
    if (clazz.isArray()) {
        return getQualifiedNameForArray(clazz);
    }
    return clazz.getName();
}

---

From source file:Main.java

/**
 * This method was added to address [JACKSON-53]: need to weed out
 * CGLib-injected "getCallbacks". /*from w ww . j  av a2 s  .  co  m*/
 * At this point caller has detected a potential getter method
 * with name "getCallbacks" and we need to determine if it is
 * indeed injectect by Cglib. We do this by verifying that the
 * result type is "net.sf.cglib.proxy.Callback[]"
 *<p>
 * Also, see [JACKSON-177]; Hibernate may repackage cglib
 * it uses, so we better catch that too
 */
protected static boolean isCglibGetCallbacks(AnnotatedMethod am) {
    Class<?> rt = am.getRawType();
    // Ok, first: must return an array type
    if (rt == null || !rt.isArray()) {
        return false;
    }
    /* And that type needs to be "net.sf.cglib.proxy.Callback".
     * Theoretically could just be a type that implements it, but
     * for now let's keep things simple, fix if need be.
     */
    Class<?> compType = rt.getComponentType();
    // Actually, let's just verify it's a "net.sf.cglib.*" class/interface
    Package pkg = compType.getPackage();
    if (pkg != null) {
        String pname = pkg.getName();
        if (pname.startsWith("net.sf.cglib")
                // also, as per [JACKSON-177]
                || pname.startsWith("org.hibernate.repackage.cglib")) {
            return true;
        }
    }
    return false;
}

---

From source file:org.hdiv.web.servlet.tags.form.SelectTagHDIV.java

/**
 * Returns '<code>true</code>' for arrays, {@link Collection Collections}
 * and {@link Map Maps}./*from  ww w  .  ja  va2  s  . c  o m*/
 */
private static boolean typeRequiresMultiple(Class type) {
    return (type.isArray() || Collection.class.isAssignableFrom(type) || Map.class.isAssignableFrom(type));
}

---

From source file:com.britesnow.snow.util.ObjectUtil.java

/**
 * <div class="notes"> <strong>Notes:</strong>
 * <ul>/*  ww  w  .  j av a  2s.  com*/
 * <li>So far does not safeguard any type conversion (will throw an runtime exception if parsing fail)</li>
 * </ul>
 * </div>
 * 
 * @param <T>
 * @param values
 *            String arrays of the value to be converted
 * @param cls
 * @param defaultValues
 * @return The typed array given a value of the String.
 */
public static final <T> T getValue(String[] values, Class<T> cls, T defaultValues) {
    if (values != null && cls.isArray()) {
        Class compCls = cls.getComponentType();
        T resultArray = (T) Array.newInstance(compCls, values.length);
        int i = 0;
        for (String v : values) {
            Object r = getValue(v, compCls, null);
            Array.set(resultArray, i++, r);
        }
        return resultArray;
    } else {
        return defaultValues;
    }

}

---

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