Java Reflection Method Name getMethods(Class clazz, String name, int args)

Description

get Methods

License

LGPL

Declaration

public static Method[] getMethods(Class<?> clazz, String name, int args) 

Method Source Code

//package com.java2s;
//License from project: LGPL 

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;

public class Main {
    public static Method[] getMethods(Class<?> clazz, String name, int args) {
        try {/*from w  w  w  .  j a va2  s  . com*/
            List<Method> list = new ArrayList<Method>();

            for (Method method : clazz.getDeclaredMethods()) {
                if (method.getParameterTypes().length == args) {
                    method.setAccessible(true);
                    list.add(method);
                }
            }

            for (Method method : clazz.getDeclaredMethods())
                if (method.getParameterTypes().length == args)
                    list.add(method);

            return list.toArray(new Method[list.size()]);
        } catch (Throwable error) {
            return null;
        }
    }

    public static Method[] getMethods(Class<?> clazz, String name, boolean declared, int args) {
        try {
            List<Method> list = new ArrayList<Method>();

            if (declared) {
                for (Method method : clazz.getDeclaredMethods()) {
                    if (method.getParameterTypes().length == args) {
                        method.setAccessible(true);
                        list.add(method);
                    }
                }
            } else
                for (Method method : clazz.getDeclaredMethods())
                    if (method.getParameterTypes().length == args)
                        list.add(method);

            return list.toArray(new Method[list.size()]);
        } catch (Throwable error) {
            return null;
        }
    }

    public static Method[] getMethods(Class<?> clazz, String name, Class<?> result) {
        try {
            List<Method> list = new ArrayList<Method>();

            for (Method method : clazz.getDeclaredMethods()) {
                if (method.getReturnType().getName().equals(result.getName())) {
                    method.setAccessible(true);
                    list.add(method);
                }
            }

            for (Method method : clazz.getDeclaredMethods())
                if (method.getReturnType().getName().equals(result.getName()))
                    list.add(method);

            return list.toArray(new Method[list.size()]);
        } catch (Throwable error) {
            return null;
        }
    }

    public static Method[] getMethods(Class<?> clazz, String name, boolean declared, Class<?> result) {
        try {
            List<Method> list = new ArrayList<Method>();

            if (declared) {
                for (Method method : clazz.getDeclaredMethods()) {
                    if (method.getReturnType().getName().equals(result.getName())) {
                        method.setAccessible(true);
                        list.add(method);
                    }
                }
            } else
                for (Method method : clazz.getDeclaredMethods())
                    if (method.getReturnType().getName().equals(result.getName()))
                        list.add(method);

            return list.toArray(new Method[list.size()]);
        } catch (Throwable error) {
            return null;
        }
    }
}

Related

1. getMethodNames(Class cls)
2. getMethodNameWithClassName(Method a_Method)
3. getMethodOnlyByName(Class c, String methodName)
4. getMethodOrNull(Class cls, String name, Class[] args)
5. getMethodPropertyName(java.lang.reflect.Method method)
6. getMethods(Class type, String name)
7. getMethods(final Class cl, final String name, final int params)
8. getMethods(final Class clazz, final String methodName)
9. getMethods(String classname)