Java Reflection Method Getter Invoke invokeStringGetterSafe(Object o, String name)

Description

invoke String Getter Safe

License

Apache License

Declaration

public static String invokeStringGetterSafe(Object o, String name) 

Method Source Code

//package com.java2s;
/*/*  w ww  . jav  a 2  s  . co m*/
   Copyright 2013, 2016-2017 Nationale-Nederlanden
    
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
    
   http://www.apache.org/licenses/LICENSE-2.0
    
   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class Main {
    public static String invokeStringGetterSafe(Object o, String name) {
        try {
            return invokeStringGetter(o, name);
        } catch (Exception e) {
            return nameOf(o) + "." + name + "() " + nameOf(e) + ": " + e.getMessage();
        }
    }

    public static String invokeStringGetter(Object o, String name) throws SecurityException, NoSuchMethodException,
            IllegalArgumentException, IllegalAccessException, InvocationTargetException {
        return (String) invokeGetter(o, name);
    }

    /**
     * returns the classname of the object, without the pacakge name.
     */
    public static String nameOf(Object o) {
        if (o == null) {
            return "<null>";
        }
        String name = o.getClass().getName();
        int pos = name.lastIndexOf('.');
        if (pos < 0) {
            return name;
        } else {
            return name.substring(pos + 1);
        }
    }

    public static Object invokeGetter(Object o, String name, boolean forceAccess) throws SecurityException,
            NoSuchMethodException, IllegalArgumentException, IllegalAccessException, InvocationTargetException {
        Method getterMtd = o.getClass().getMethod(name, null);
        if (forceAccess) {
            getterMtd.setAccessible(true);
        }
        return getterMtd.invoke(o, null);
    }

    public static Object invokeGetter(Object o, String name) throws SecurityException, NoSuchMethodException,
            IllegalArgumentException, IllegalAccessException, InvocationTargetException {
        return invokeGetter(o, name, false);
    }
}

Related

1. invokeGetter(Object object, String field)
2. invokeGetter(Object target, Method getter)
3. invokeGetterMethod(final Method method, final Object object)
4. invokeGetterSafe(Object o, String name, boolean forceAccess)
5. invokeSetter(Object target, Class clazz, String methodName, String getterMethod, Object param)