Find the source object setter method for the given property. - Java Reflection

Java examples for Reflection:Setter

  1. HOME
  2. Java
  3. Reflection
  4. Setter

Description

Find the source object setter method for the given property.

Demo Code


//package com.java2s;
import java.lang.reflect.Method;

public class Main {
    /**//from  w  w w  . j a  va2 s  .  c  o  m
     * Find the source object setter method for the given property.
     *
     * @param source the source object to find the setter method on
     * @param property the property which setter needs to be looked up
     * @param targetClass the setter parameter type
     * @param path the full expression path (used for logging purposes)
     * @return the setter method
     */
    public final static Method findSetter(Object source, String property,
            Class targetClass, String path) {
        Method method = null;

        // Find the setter for property
        String setterName = toSetterName(property);

        Class sourceClass = source.getClass();
        Class[] classArgs = { targetClass };
        try {
            method = sourceClass.getMethod(setterName, classArgs);
        } catch (Exception e) {
            // Log detailed error message of why setter lookup failed
            StringBuilder buffer = new StringBuilder();
            buffer.append("Result: setter method '");
            buffer.append(setterName).append("(")
                    .append(targetClass.getName());
            buffer.append(")' was not found on class '");
            buffer.append(source.getClass().getName()).append("'.");
            throw new RuntimeException(buffer.toString(), e);
        }
        return method;
    }

    /**
     * Return the setter method name for the given property name.
     *
     * @param property the property name
     * @return the setter method name for the given property name.
     */
    public static String toSetterName(String property) {
        StringBuilder buffer = new StringBuilder(property.length() + 3);

        buffer.append("set");
        buffer.append(Character.toUpperCase(property.charAt(0)));
        buffer.append(property.substring(1));

        return buffer.toString();
    }
}

Related Tutorials