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/**
* Copyright (c) 2024 Araf Karsh Hamid
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
* or (per the licensee's choosing)
* under the terms of the Apache 2 License version 2.0
* as published by the Apache Software Foundation.
*/
package java22;
import java.math.BigInteger;
import static java.lang.System.out;
/**
* Java 22 Example
* Constructor Validation before the super() method call.
*
* @author: Araf Karsh Hamid
* @version:
* @date:
*/
public class ConstructorValidation {
public static void main(String[] args) {
// Java 22
out.println("JAVA 22 >>>>>--------------------------------------------------------");
out.println("Constructor Validation - Old Way with Static Code");
testConstructorOld(127);
testConstructorOld(-23);
out.println("Constructor Validation - New Way: Validations before super() call");
testConstructorNew(127);
testConstructorNew(-23);
}
public static void testConstructorOld(long value) {
try {
PositiveIntegerOld pio = new PositiveIntegerOld(value);
out.println("OLD: Integer Value = "+value);
} catch (Exception e) {
out.println("ERROR: Invalid Input = "+value);
out.println(e.getMessage());
}
}
public static void testConstructorNew(long value) {
try {
PositiveIntegerNew pio = new PositiveIntegerNew(value);
out.println("NEW: Integer Value = "+value);
} catch (Exception e) {
out.println("ERROR: Invalid Input = "+value);
out.println(e.getMessage());
}
}
}
/**
* Old of Constructor Validation using a static method call.
*/
class PositiveIntegerOld extends BigInteger {
public PositiveIntegerOld(long value) {
super(String.valueOf(validateInput(value)));
}
/**
* validation static method call
* @param value
* @return
*/
private static long validateInput(long value) {
if(value < 0) {
throw new IllegalArgumentException("Input Must be a Positive Number! Input="+value);
}
return value;
}
}
/**
* Constructor Validation before the super() method call
*/
class PositiveIntegerNew extends BigInteger {
public PositiveIntegerNew(long value) {
if(value < 0) {
throw new IllegalArgumentException("Input Must be a Positive Number! Input="+value);
}
super(String.valueOf(value));
}
}