Examples of java.lang.reflect.Method

java.lang.reflect.Method
A Method provides information about, and access to, a single method on a class or interface. The reflected method may be a class method or an instance method (including an abstract method).
A Method permits widening conversions to occur when matching the actual parameters to invoke with the underlying method's formal parameters, but it throws an IllegalArgumentException if a narrowing conversion would occur. @see Member @see java.lang.Class @see java.lang.Class#getMethods() @see java.lang.Class#getMethod(String,Class[]) @see java.lang.Class#getDeclaredMethods() @see java.lang.Class#getDeclaredMethod(String,Class[]) @author Kenneth Russell @author Nakul Saraiya

  public void testIsSetter() throws SecurityException, NoSuchMethodException
  {
    BindableBean bean = new BindableBean();
    Class<? extends BindableBean> clazz = bean.getClass();


    Method method = clazz.getMethod("setBoolValue", new Class[]
    {
      Boolean.TYPE
    });
    assert ReflectHelper.isSetter(method);

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  @Test
  public void testWildCardType() throws SecurityException, NoSuchMethodException
  {


    Method method = getWildcardMethod("setUpperValue");


    Assert.assertEquals(ReflectHelper.getTypeDescription(method.getGenericParameterTypes()[0]),
        "parameterized interface java.util.Collection (wildcard generic type with upper bound (interface java.util.List))");
    


    method = getWildcardMethod("setLowerValue");


    Assert.assertEquals(ReflectHelper.getTypeDescription(method.getGenericParameterTypes()[0]),
        "parameterized interface java.util.Collection (wildcard generic type with upper bound (class java.lang.Object) and lower bound (class java.util.ArrayList))");


  }

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  private Method getWildcardMethod(String methodName)
  {
    Method[] methods = ClassWithWildcardTypes.class.getMethods();
    
    Method method  = null;
    
    for (int i = 0; i < methods.length; i++)
    {
      String name = methods[i].getName();
      if (name.startsWith(methodName))

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  public void testInvalidType1() throws Exception
  {
    try
    {
      TestAction action = new TestAction();
      Method setterMethod = getSetter(action, "setIntegerInput", Integer.class);
      PropertyValueSetter.setPropertyValue(action, setterMethod, Integer.class,
          "should be an int but is a String");
    }
    catch (ApplicationRuntimeException e)
    {

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  @Test
  public void testPropertyValueSetter1() throws Exception
  {
    TestAction action = new TestAction();
    Method setterMethod = getSetter(action, "setIntegerInput", Integer.class);
    PropertyValueSetter.setPropertyValue(action, setterMethod, Integer.class, new Integer(1));
    assert action.getIntegerInput().equals(1);
  }

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  @Test
  public void testPropertyValueSetter2() throws Exception
  {
    TestAction action = new TestAction();
    Method setterMethod = getSetter(action, "setIntegerInput", Integer.class);
    PropertyDescriptor descriptor = BeanUtils.findPropertyForMethod(setterMethod);


    PropertyValueSetter.setPropertyValue(action, descriptor, new Integer(1));
    assert action.getIntegerInput().equals(1);
  }

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  }


  @Test
  public void testPrimitives1() throws NoSuchMethodException
  {
    Method setterMethod = getSetter(action, "setByteInput", Byte.TYPE);


    PropertyValueSetter.setPropertyValue(action, setterMethod, Byte.TYPE, null);
    assert action.getByteInput() == 0;


    PropertyValueSetter.setPropertyValue(action, setterMethod, Byte.TYPE, (byte) 1);

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    testNullPrimitive("doubleInput");
  }


  private Method getSetter(TestAction action, String name, Class clazz) throws NoSuchMethodException
  {
    Method setterMethod = action.getClass().getMethod(name, new Class[]
    {
      clazz
    });
    return setterMethod;
  }

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  @Test
  public void testGetGetter() throws Exception
  {
    ValidationAnnotationReader reader = new ValidationAnnotationReader();
    Method setter = BeanWithGetterValidator.class.getMethod("setProperty", new Class[]
    {
      String.class
    });


    assert null != reader.getGetter(setter);

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  @Test
  public void testGetNoGetter() throws Exception
  {
    ValidationAnnotationReader reader = new ValidationAnnotationReader();
    Method setter = BeanWithNoGetter.class.getMethod("setStringProperty", new Class[]
    {
      String.class
    });


    try

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