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<TITLE>Getting the Methods of a Class Object (Java Developers Almanac Example)
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<h3>e118. Getting the Methods of a Class Object</h3>
There are three ways of obtaining a <code>Method</code> object from a
<code>Class</code> object.
<pre> Class cls = <font color="#0066ff"><i>java.lang.String.class</i></font>;
// By obtaining a list of all declared methods.
Method[] methods = cls.getDeclaredMethods();
// By obtaining a list of all public methods, both declared and inherited.
methods = cls.getMethods();
for (int i=0; i<methods.length; i++) {
Class returnType = methods[i].getReturnType();
Class[] paramTypes = methods[i].getParameterTypes();
<font color="#0066ff"><i>process</i></font>(methods[i]);
}
// By obtaining a particular Method object.
// This example retrieves String.substring(int).
try {
Method method = cls.getMethod(<font color="#0066ff"><i>"substring"</i></font>, new Class[] {<font color="#0066ff"><i>int.class</i></font>});
<font color="#0066ff"><i>process</i></font>(method);
} catch (NoSuchMethodException e) {
}
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<b>Related Examples</b></font></td>
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e119. <a class="eglink" href="InvokeMethod.html?l=rel">
Invoking a Method Using a Method Object
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See also:
<a class="eglink" href="/egs/java.lang.reflect/pkg.html?l=rel#Arrays">
Arrays
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<a class="eglink" href="/egs/java.lang.reflect/pkg.html?l=rel#Constructors">
Constructors
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<a class="eglink" href="/egs/java.lang.reflect/pkg.html?l=rel#Fields">
Fields
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<a class="eglink" href="/egs/java.lang.reflect/pkg.html?l=rel#Modifiers">
Modifiers
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