field.html

API資料大全

</DD>
</DL>
<HR>

<A NAME="hashCode()"><!-- --></A><H3>
hashCode</H3>
<PRE>
public int <B>hashCode</B>()</PRE>
<DL>
<DD>Returns a hashcode for this <code>Field</code>.  This is computed as the
 exclusive-or of the hashcodes for the underlying field's
 declaring class name and its name.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../java/lang/Object.html#hashCode()">hashCode</A></CODE> in class <CODE><A HREF="../../../java/lang/Object.html">Object</A></CODE></DL>
</DD>
<DD>Following copied from class: <CODE>java.lang.Object</CODE></DD>
<DD><DL>
<DT><B>Returns:</B><DD>a hash code value for this object.<DT><B>See Also: </B><DD><A HREF="../../../java/lang/Object.html#equals(java.lang.Object)"><CODE>Object.equals(java.lang.Object)</CODE></A>, 
<A HREF="../../../java/util/Hashtable.html"><CODE>Hashtable</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public <A HREF="../../../java/lang/String.html">String</A> <B>toString</B>()</PRE>
<DL>
<DD>Returns a string describing this <code>Field</code>.  The format is
 the access modifiers for the field, if any, followed
 by the field type, followed by a space, followed by
 the fully-qualified name of the class declaring the field,
 followed by a period, followed by the name of the field.
 For example:
 <pre>
    public static final int java.lang.Thread.MIN_PRIORITY
    private int java.io.FileDescriptor.fd
 </pre>

 <p>The modifiers are placed in canonical order as specified by
 "The Java Language Specification".  This is <tt>public</tt>,
 <tt>protected</tt> or <tt>private</tt> first, and then other
 modifiers in the following order: <tt>static</tt>, <tt>final</tt>,
 <tt>transient</tt>, <tt>volatile</tt>.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../java/lang/Object.html#toString()">toString</A></CODE> in class <CODE><A HREF="../../../java/lang/Object.html">Object</A></CODE></DL>
</DD>
<DD>Following copied from class: <CODE>java.lang.Object</CODE></DD>
<DD><DL>
<DT><B>Returns:</B><DD>a string representation of the object.</DL>
</DD>
</DL>
<HR>

<A NAME="get(java.lang.Object)"><!-- --></A><H3>
get</H3>
<PRE>
public <A HREF="../../../java/lang/Object.html">Object</A> <B>get</B>(<A HREF="../../../java/lang/Object.html">Object</A>&nbsp;obj)
           throws <A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A>,
                  <A HREF="../../../java/lang/IllegalAccessException.html">IllegalAccessException</A></PRE>
<DL>
<DD>Returns the value of the field represented by this <code>Field</code>, on
 the specified object. The value is automatically wrapped in an
 object if it has a primitive type.

 <p>The underlying field's value is obtained as follows:

 <p>If the underlying field is a static field, the <code>obj</code> argument
 is ignored; it may be null.

 <p>Otherwise, the underlying field is an instance field.  If the
 specified <code>obj</code> argument is null, the method throws a
 <code>NullPointerException.</code> If the specified object is not an
 instance of the class or interface declaring the underlying
 field, the method throws an <code>IllegalArgumentException</code>.

 <p>If this <code>Field</code> object enforces Java language access control, and
 the underlying field is inaccessible, the method throws an
 <code>IllegalAccessException</code>.
 If the underlying field is static, the class that declared the
 field is initialized if it has not already been initialized. 

 <p>Otherwise, the value is retrieved from the underlying instance
 or static field.  If the field has a primitive type, the value
 is wrapped in an object before being returned, otherwise it is
 returned as is.

 <p>If the field is hidden in the type of <code>obj</code>,
 the field's value is obtained according to the preceding rules.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/IllegalAccessException.html">IllegalAccessException</A></CODE> - if the underlying constructor
              is inaccessible.<DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the specified object is not an
              instance of the class or interface declaring the underlying
              field (or a subclass or implementor thereof).<DD><CODE><A HREF="../../../java/lang/NullPointerException.html">NullPointerException</A></CODE> - if the specified object is null
              and the field is an instance field.<DD><CODE><A HREF="../../../java/lang/ExceptionInInitializerError.html">ExceptionInInitializerError</A></CODE> - if the initialization provoked
              by this method fails.</DL>
</DD>
</DL>
<HR>

<A NAME="getBoolean(java.lang.Object)"><!-- --></A><H3>
getBoolean</H3>
<PRE>
public boolean <B>getBoolean</B>(<A HREF="../../../java/lang/Object.html">Object</A>&nbsp;obj)
                   throws <A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A>,
                          <A HREF="../../../java/lang/IllegalAccessException.html">IllegalAccessException</A></PRE>
<DL>
<DD>Gets the value of a field as a <code>boolean</code> on the specified object.
 This method is equivalent to
 <code>((Boolean)get(obj)).booleanValue()</code>,
 except that an <code>IllegalArgumentException</code> is thrown 
 if the field value cannot be converted to the type
 <code>boolean</code> by a widening conversion.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/IllegalAccessException.html">IllegalAccessException</A></CODE> - if the underlying constructor
              is inaccessible.<DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the specified object is not 
              an instance of the class or interface declaring the
              underlying field (or a subclass or implementor 
              thereof), or if the field value cannot be
              converted to the type <code>boolean</code> by a 
              widening conversion.<DD><CODE><A HREF="../../../java/lang/NullPointerException.html">NullPointerException</A></CODE> - if the specified object is null
              and the field is an instance field.<DD><CODE><A HREF="../../../java/lang/ExceptionInInitializerError.html">ExceptionInInitializerError</A></CODE> - if the initialization provoked
              by this method fails.<DT><B>See Also: </B><DD><A HREF="../../../java/lang/reflect/Field.html#get(java.lang.Object)"><CODE>get(java.lang.Object)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getByte(java.lang.Object)"><!-- --></A><H3>
getByte</H3>
<PRE>
public byte <B>getByte</B>(<A HREF="../../../java/lang/Object.html">Object</A>&nbsp;obj)
             throws <A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A>,
                    <A HREF="../../../java/lang/IllegalAccessException.html">IllegalAccessException</A></PRE>
<DL>
<DD>Gets the value of a field as a <code>byte</code> on the specified object.
 This method is equivalent to
 <code>((Number)get(obj)).byteValue()</code>,
 except that an <code>IllegalArgumentException</code> is thrown 
 if the field value cannot be converted to the type
 <code>byte</code> by a widening conversion.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/IllegalAccessException.html">IllegalAccessException</A></CODE> - if the underlying constructor
              is inaccessible.<DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the specified object is not 
              an instance of the class or interface declaring the
              underlying field (or a subclass or implementor 
              thereof), or if the field value cannot be
              converted to the type <code>byte</code> by a 
              widening conversion.<DD><CODE><A HREF="../../../java/lang/NullPointerException.html">NullPointerException</A></CODE> - if the specified object is null
              and the field is an instance field.<DD><CODE><A HREF="../../../java/lang/ExceptionInInitializerError.html">ExceptionInInitializerError</A></CODE> - if the initialization provoked
              by this method fails.<DT><B>See Also: </B><DD><A HREF="../../../java/lang/reflect/Field.html#get(java.lang.Object)"><CODE>get(java.lang.Object)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getChar(java.lang.Object)"><!-- --></A><H3>
getChar</H3>
<PRE>
public char <B>getChar</B>(<A HREF="../../../java/lang/Object.html">Object</A>&nbsp;obj)
             throws <A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A>,
                    <A HREF="../../../java/lang/IllegalAccessException.html">IllegalAccessException</A></PRE>
<DL>
<DD>Gets the value of a field as a <code>char</code> on the specified object.
 This method is equivalent to
 <code>((Character)get(obj)).charValue()</code>,
 except that an <code>IllegalArgumentException</code> is thrown 
 if the field value cannot be converted to the type
 <code>char</code> by a widening conversion.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/IllegalAccessException.html">IllegalAccessException</A></CODE> - if the underlying constructor
              is inaccessible.<DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the specified object is not 
              an instance of the class or interface declaring the
              underlying field (or a subclass or implementor 
              thereof), or if the field value cannot be
              converted to the type <code>char</code> by a 
              widening conversion.<DD><CODE><A HREF="../../../java/lang/NullPointerException.html">NullPointerException</A></CODE> - if the specified object is null
              and the field is an instance field.<DD><CODE><A HREF="../../../java/lang/ExceptionInInitializerError.html">ExceptionInInitializerError</A></CODE> - if the initialization provoked
              by this method fails.<DT><B>See Also: </B><DD><A HREF="../../../java/lang/reflect/Field.html#get(java.lang.Object)"><CODE>get(java.lang.Object)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getShort(java.lang.Object)"><!-- --></A><H3>
getShort</H3>
<PRE>
public short <B>getShort</B>(<A HREF="../../../java/lang/Object.html">Object</A>&nbsp;obj)
               throws <A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A>,
                      <A HREF="../../../java/lang/IllegalAccessException.html">IllegalAccessException</A></PRE>
<DL>
<DD>Gets the value of a field as a <code>short</code> on the specified object.
 This method is equivalent to
 <code>((Number)get(obj)).shortValue()</code>,
 except that an <code>IllegalArgumentException</code> is thrown 
 if the field value cannot be converted to the type
 <code>short</code> by a widening conversion.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE><A HREF="../../../java/lang/IllegalAccessException.html">IllegalAccessException</A></CODE> - if the underlying constructor
              is inaccessible.<DD><CODE><A HREF="../../../java/lang/IllegalArgumentException.html">IllegalArgumentException</A></CODE> - if the specified object is not 
              an instance of the class or interface declaring the
              underlying field (or a subclass or implementor 
              thereof), or if the field value cannot be
              converted to the type <code>short</code> by a 
              widening conversion.<DD><CODE><A HREF="../../../java/lang/NullPointerException.html">NullPointerException</A></CODE> - if the specified object is null
              and the field is an instance field.<DD><CODE><A HREF="../../../java/lang/ExceptionInInitializerError.html">ExceptionInInitializerError</A></CODE> - if the initialization provoked
              by this method fails.<DT><B>See Also: </B><DD><A HREF="../../../java/lang/reflect/Field.html#get(java.lang.Object)"><CODE>get(java.lang.Object)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="getInt(java.lang.Object)"><!-- --></A><H3>
getInt</H3>
<PRE>