Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2010 JBoss Inc
 *
 * 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.math.BigDecimal;
import java.math.BigInteger;

public class Main {
    public static boolean isTypeCompatibleWithArgumentType(Class<?> actual, Class<?> formal) {
        if (actual.isPrimitive() && formal.isPrimitive()) {
            return isConvertible(actual, formal);
        } else if (actual.isPrimitive()) {
            return isConvertible(actual, convertToPrimitiveType(formal));
        } else if (formal.isPrimitive()) {
            return isConvertible(convertToPrimitiveType(actual), formal);
        } else {
            return formal.isAssignableFrom(actual);
        }
    }

    public static boolean isConvertible(Class<?> srcPrimitive, Class<?> tgtPrimitive) {
        if (Boolean.TYPE.equals(srcPrimitive)) {
            return Boolean.TYPE.equals(tgtPrimitive);
        } else if (Byte.TYPE.equals(tgtPrimitive)) {
            return Byte.TYPE.equals(tgtPrimitive) || Short.TYPE.equals(tgtPrimitive)
                    || Integer.TYPE.equals(tgtPrimitive) || Long.TYPE.equals(tgtPrimitive)
                    || Float.TYPE.equals(tgtPrimitive) || Double.TYPE.equals(tgtPrimitive);
        } else if (Character.TYPE.equals(srcPrimitive)) {
            return Character.TYPE.equals(tgtPrimitive) || Integer.TYPE.equals(tgtPrimitive)
                    || Long.TYPE.equals(tgtPrimitive) || Float.TYPE.equals(tgtPrimitive)
                    || Double.TYPE.equals(tgtPrimitive);
        } else if (Double.TYPE.equals(srcPrimitive)) {
            return Double.TYPE.equals(tgtPrimitive);
        } else if (Float.TYPE.equals(srcPrimitive)) {
            return Float.TYPE.equals(tgtPrimitive) || Double.TYPE.equals(tgtPrimitive);
        } else if (Integer.TYPE.equals(srcPrimitive)) {
            return Integer.TYPE.equals(tgtPrimitive) || Long.TYPE.equals(tgtPrimitive)
                    || Float.TYPE.equals(tgtPrimitive) || Double.TYPE.equals(tgtPrimitive);
        } else if (Long.TYPE.equals(srcPrimitive)) {
            return Long.TYPE.equals(tgtPrimitive) || Float.TYPE.equals(tgtPrimitive)
                    || Double.TYPE.equals(tgtPrimitive);
        } else if (Short.TYPE.equals(srcPrimitive)) {
            return Short.TYPE.equals(tgtPrimitive) || Integer.TYPE.equals(tgtPrimitive)
                    || Long.TYPE.equals(tgtPrimitive) || Float.TYPE.equals(tgtPrimitive)
                    || Double.TYPE.equals(tgtPrimitive);
        }
        return false;
    }

    public static Class<?> convertToPrimitiveType(Class<?> type) {
        if (type.isPrimitive())
            return type;
        if (type == Integer.class)
            return int.class;
        if (type == Long.class)
            return long.class;
        if (type == Float.class)
            return float.class;
        if (type == Double.class)
            return double.class;
        if (type == Short.class)
            return short.class;
        if (type == Byte.class)
            return byte.class;
        if (type == Character.class)
            return char.class;
        if (type == Boolean.class)
            return boolean.class;
        if (type == BigInteger.class)
            return long.class;
        if (type == BigDecimal.class)
            return double.class;
        if (type == Number.class)
            return double.class;
        throw new RuntimeException("Class not convertible to primitive: " + type.getName());
    }
}