Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

public class Main {
    public static Object isEmpty(Object obj, Class clazz) {
        if (obj == null || clazz == null) {
            return obj;
        }
        Field[] fields = clazz.getDeclaredFields();
        for (Field field : fields) {
            try {
                String fieldName = field.getName();
                if (fieldName == null || fieldName.length() == 0)
                    continue;
                String fieldMethodName = fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);
                String getfieldName = "get" + fieldMethodName;
                Method getMethod = clazz.getMethod(getfieldName, null);
                if (getMethod == null)
                    continue;
                Object value = getMethod.invoke(obj, null);
                Class type = field.getType();
                if (type == String.class) {
                    if (value == null || "null".equals(value.toString()) || value.toString().trim().length() == 0) {
                        value = "";
                        String setfieldName = "set" + fieldMethodName;
                        Method setMethod = clazz.getMethod(setfieldName, String.class);
                        if (setMethod == null)
                            continue;
                        setMethod.invoke(obj, value);
                    }
                } else if (type == Integer.class || type == int.class || type == Float.class || type == float.class
                        || type == Double.class || type == double.class) {
                    if (value == null || "null".equals(value.toString()) || value.toString().length() == 0) {
                        String setfieldName = "set" + fieldMethodName;
                        Method setMethod = clazz.getMethod(setfieldName, type);
                        setMethod.invoke(obj, 0);
                    }
                }

            } catch (Exception e) {
                e.printStackTrace();
                continue;
            }
        }
        return obj;
    }
}