Example usage for java.lang Class isPrimitive

List of usage examples for java.lang Class isPrimitive

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Introduction

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

Prototype

@HotSpotIntrinsicCandidate
public native boolean isPrimitive();

Source Link

Document

Determines if the specified Class object represents a primitive type.

Usage

From source file:org.crazydog.util.spring.ClassUtils.java

/**
 * Check if the given class represents a primitive (i.e. boolean, byte,
 * char, short, int, long, float, or double) or a primitive wrapper
 * (i.e. Boolean, Byte, Character, Short, Integer, Long, Float, or Double).
 * @param clazz the class to check/*from   ww w.  jav  a2  s .c o  m*/
 * @return whether the given class is a primitive or primitive wrapper class
 */
public static boolean isPrimitiveOrWrapper(Class<?> clazz) {
    org.springframework.util.Assert.notNull(clazz, "Class must not be null");
    return (clazz.isPrimitive() || isPrimitiveWrapper(clazz));
}

From source file:org.crazydog.util.spring.ClassUtils.java

/**
 * Resolve the given class if it is a primitive class,
 * returning the corresponding primitive wrapper type instead.
 * @param clazz the class to check/*  ww w  .j  ava2  s .c o m*/
 * @return the original class, or a primitive wrapper for the original primitive type
 */
public static Class<?> resolvePrimitiveIfNecessary(Class<?> clazz) {
    org.springframework.util.Assert.notNull(clazz, "Class must not be null");
    return (clazz.isPrimitive() && clazz != void.class ? primitiveTypeToWrapperMap.get(clazz) : clazz);
}

From source file:name.ikysil.beanpathdsl.codegen.Context.java

private boolean isExcluded(Class<?> clazz) {
    if (clazz.isPrimitive() || clazz.isAnonymousClass() || clazz.isLocalClass() || clazz.isInterface()
            || clazz.isSynthetic() || clazz.isEnum() || !Modifier.isPublic(clazz.getModifiers())
            || (clazz.getPackage() == null)) {
        return true;
    }//from  w  ww.  j  ava2 s  . com
    IncludedClass includedConfig = includedClasses.get(clazz);
    if (includedConfig != null) {
        return false;
    }
    ExcludedClass excludedConfig = excludedClasses.get(clazz);
    if (excludedConfig != null) {
        return true;
    }
    for (ExcludedPackage excludedPackage : excludedPackages) {
        if (excludedPackage.match(clazz.getPackage())) {
            return true;
        }
    }
    return false;
}

From source file:com.feilong.commons.core.lang.ClassUtil.java

/**
 *  class info map for log./* w  w w. jav  a2  s . c o m*/
 *
 * @param klass
 *            the clz
 * @return the map for log
 */
public static Map<String, Object> getClassInfoMapForLog(Class<?> klass) {

    Map<String, Object> map = new LinkedHashMap<String, Object>();

    //"clz.getCanonicalName()": "com.feilong.commons.core.date.DatePattern",
    //"clz.getName()": "com.feilong.commons.core.date.DatePattern",
    //"clz.getSimpleName()": "DatePattern",

    // getCanonicalName ( Java Language Specification ??) && getName
    //??class?array?
    // getName[[Ljava.lang.String?getCanonicalName?
    map.put("clz.getCanonicalName()", klass.getCanonicalName());
    map.put("clz.getName()", klass.getName());
    map.put("clz.getSimpleName()", klass.getSimpleName());

    map.put("clz.getComponentType()", klass.getComponentType());
    // ?? voidboolean?byte?char?short?int?long?float  double?
    map.put("clz.isPrimitive()", klass.isPrimitive());

    // ??,
    map.put("clz.isLocalClass()", klass.isLocalClass());
    // ????,??????
    map.put("clz.isMemberClass()", klass.isMemberClass());

    //isSynthetic()?Class????java??false?trueJVM???java??????
    map.put("clz.isSynthetic()", klass.isSynthetic());
    map.put("clz.isArray()", klass.isArray());
    map.put("clz.isAnnotation()", klass.isAnnotation());

    //??true
    map.put("clz.isAnonymousClass()", klass.isAnonymousClass());
    map.put("clz.isEnum()", klass.isEnum());

    return map;
    //      Class<?> klass = this.getClass();
    //
    //      TypeVariable<?>[] typeParameters = klass.getTypeParameters();
    //      TypeVariable<?> typeVariable = typeParameters[0];
    //
    //      Type[] bounds = typeVariable.getBounds();
    //
    //      Type bound = bounds[0];
    //
    //      if (log.isDebugEnabled()){
    //         log.debug("" + (bound instanceof ParameterizedType));
    //      }
    //
    //      Class<T> modelClass = ReflectUtil.getGenericModelClass(klass);
    //      return modelClass;
}

From source file:com.appleframework.core.utils.ClassUtility.java

/**
 *  <code>fromClass</code> ???? <code>clazz</code>
 * <p>// ww  w.  j a va 2  s.co  m
 * ??? <code>object1, object2, ...</code> ????
 * <code>class1, class2,
 * ...</code> 
 * </p>
 * <p>
 * 
 * <ol>
 * <li> <code>clazz</code>  <code>null</code>  <code>false</code>
 * </li>
 * <li>? <code>fromClass</code>  <code>null</code> 
 * <code>clazz</code> ?? <code>true</code>  <code>null</code>
 * ?</li>
 * <li> <code>Class.isAssignableFrom</code> ? <code>clazz</code>
 * ?? <code>fromClass</code> ??? <code>true</code></li>
 * <li> <code>clazz</code> ?? <a
 * href="http://java.sun.com/docs/books/jls/">The Java Language
 * Specification</a> sections 5.1.1, 5.1.2, 5.1.4Widening Primitive
 * Conversion? <code>fromClass</code> ???? 
 * <code>clazz</code>  <code>long</code> ?? <code>byte</code>?
 * <code>short</code>?<code>int</code>?<code>long</code>?<code>char</code>
 * ? <code>java.lang.Byte</code>?<code>java.lang.Short</code>?
 * <code>java.lang.Integer</code>? <code>java.lang.Long</code> 
 * <code>java.lang.Character</code> ? <code>true</code></li>
 * <li>?? <code>false</code></li>
 * </ol>
 * </p>
 *
 * @param clazz      <code>null</code>  <code>false</code>
 * @param fromClass ? <code>null</code> ????
 * @return ? <code>null</code>
 */
public static boolean isAssignable(Class<?> clazz, Class<?> fromClass) {
    if (clazz == null) {
        return false;
    }

    // fromClassnull??clazz??int?
    if (fromClass == null) {
        return !clazz.isPrimitive();
    }

    // ???
    if (clazz.isAssignableFrom(fromClass)) {
        return true;
    }

    // ??JLS
    // class?fromClass???
    if (clazz.isPrimitive()) {
        return assignmentTable.get(clazz).contains(fromClass);
    }

    return false;
}

From source file:com.taobao.adfs.util.Utilities.java

/**
 * is native primitive or java primitive type
 *///from w w  w .  j a  v a 2s  .c o  m
public static boolean isNativeOrJavaPrimitiveType(Class<?> clazz) {
    if (clazz.isPrimitive())
        return true;
    if (clazz.equals(Boolean.class) || clazz.equals(Character.class) || clazz.equals(Byte.class)
            || clazz.equals(Short.class) || clazz.equals(Integer.class) || clazz.equals(Long.class)
            || clazz.equals(Float.class) || clazz.equals(Double.class) || clazz.equals(Void.class))
        return true;
    return false;
}

From source file:com.metaparadigm.jsonrpc.BeanSerializer.java

@Override
public boolean canSerialize(Class clazz, Class jsonClazz) {
    return (!clazz.isArray() && !clazz.isPrimitive() && !clazz.isInterface()
            && (jsonClazz == null || jsonClazz == JSONObject.class));
}

From source file:br.com.binarti.simplesearchexpr.DefaultOperatorResolver.java

@Override
public SimpleSearchRelationalOperator resolveOperator(Class<?> fieldType, String value,
        SimpleSearchExpressionField field) {
    if (String.class.isAssignableFrom(fieldType)) {
        return (field.getDefaultOperator() == null) ? LIKE : field.getDefaultOperator();
    }/*  w w  w  .  ja  va2 s  . c o m*/
    if (fieldType.isPrimitive()) {
        fieldType = ClassUtils.primitiveToWrapper(fieldType);
    }
    SimpleSearchRelationalOperator operator = (field.getDefaultOperator() == null) ? EQUALS
            : field.getDefaultOperator();
    if (value != null) {
        if (Number.class.isAssignableFrom(fieldType) || Date.class.isAssignableFrom(fieldType)) {
            if (value.contains(INTERVAL_SEPARATOR)) {
                operator = INTERVAL;
            }
        }
        if (value.contains(LIST_SEPARATOR)) {
            operator = LIST;
        }
    }
    return operator;
}

From source file:com.weibo.api.motan.proxy.RefererInvocationHandler.java

private Object getDefaultReturnValue(Class<?> returnType) {
    if (returnType != null && returnType.isPrimitive()) {
        return PrimitiveDefault.getDefaultReturnValue(returnType);
    }//from   ww  w .  ja  v  a2  s. c o  m
    return null;
}