Dec 13: JCoinz

public class Account {
    private String name;
    private int coins;

    public String getName() {
        return this.name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getCoins() {
        return this.coins;
    }

    public void setCoins(int coins) {
        this.coins = coins;
    }

    public boolean payCoins(int amount) {
        int decreasedCoins;
        if (this.getCoins() <= 0) {
            IO.printStatus("-", "No more jcoinz!\n\n");
            return false;
        }
        if (amount < 0) {
            amount *= -1;
        }
        if ((decreasedCoins = this.getCoins() - amount - Shop.transactionTax) < 0) {
            IO.printStatus("-", "You cannot generate debts!\n\n");
            return false;
        }
        this.setCoins(decreasedCoins);
        IO.printStatus("-", "Decreased the account of \"" + this.getName() + "\" by " + String.valueOf(amount) + "\n");
        return true;
    }

    public Account(String name, int coins) {
        this.name = name;
        this.coins = coins;
    }
}

import java.io.InputStream;
import java.io.PrintStream;
import java.util.Scanner;

public class IO {
    public static void printStatus(String status, String message) {
        System.out.print("[" + status + "] " + message);
    }

    public static Scanner getUserInput(String question) {
        IO.printStatus("?", question);
        return new Scanner(System.in);
    }
}

import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.xml.sax.SAXException;

public class Shop {
    public static int transactionTax = 2;

    public static void sendToAdmin(Account acc) {
        if (acc.payCoins(1337)) {
            String secretMessage = IO.getUserInput("XML Message: ").nextLine();
            DocumentBuilderFactory xmlDocumentBuilderFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder xmlDocumentBuilder = null;
            Document xmlDocument = null;
            try {
                xmlDocumentBuilder = xmlDocumentBuilderFactory.newDocumentBuilder();
            }
            catch (ParserConfigurationException e) {
                e.printStackTrace();
            }
            try {
                xmlDocument = xmlDocumentBuilder.parse(new ByteArrayInputStream(secretMessage.getBytes()));
            }
            catch (SAXException e) {
                e.printStackTrace();
            }
            catch (IOException e) {
                e.printStackTrace();
            }
            TransformerFactory xmlTransformerFactory = TransformerFactory.newInstance();
            Transformer xmlTransformer = null;
            try {
                xmlTransformer = xmlTransformerFactory.newTransformer();
            }
            catch (TransformerConfigurationException e1) {
                e1.printStackTrace();
            }
            xmlTransformer.setOutputProperty("omit-xml-declaration", "yes");
            StringWriter xmlWriter = new StringWriter();
            try {
                xmlTransformer.transform(new DOMSource(xmlDocument), new StreamResult(xmlWriter));
            }
            catch (TransformerException e) {
                e.printStackTrace();
            }
            IO.printStatus("+", "Your secret xml message: " + xmlWriter.getBuffer().toString() + "\n\n");
        }
    }

    public static void sendToCharity(Account acc) {
        if (acc.payCoins(IO.getUserInput("Amount of jcoinz to send: ").nextInt())) {
            IO.printStatus("+", "Thank you very much!\n\n");
        }
    }
}

import java.io.PrintStream;

public class MainRunner {
    public static void showWelcome() {
        System.out.println("$$$$$$$$$$$$$$$$$$\n$ JCOINZ SERVICE $\n$$$$$$$$$$$$$$$$$$\n");
    }

    public static void showMenu(Account acc) {
        System.out.println("1 - sends jcoinz to charity\n2 - send a secret xml message to the admin \nYour name: " + acc.getName() + "\n" + "Your amount of jcoinz: " + String.valueOf(acc.getCoins()) + "\n");
    }

    /*
     * Exception decompiling
     */
    public static void main(String[] args) {
        // This method has failed to decompile.  When submitting a bug report, please provide this stack trace, and (if you hold appropriate legal rights) the relevant class file.
        // org.benf.cfr.reader.util.CannotPerformDecode: reachable test BLOCK was exited and re-entered.
        // org.benf.cfr.reader.bytecode.analysis.opgraph.op3rewriters.Misc.getFarthestReachableInRange(Misc.java:143)
        // org.benf.cfr.reader.bytecode.analysis.opgraph.op3rewriters.SwitchReplacer.examineSwitchContiguity(SwitchReplacer.java:385)
        // org.benf.cfr.reader.bytecode.analysis.opgraph.op3rewriters.SwitchReplacer.replaceRawSwitches(SwitchReplacer.java:65)
        // org.benf.cfr.reader.bytecode.CodeAnalyser.getAnalysisInner(CodeAnalyser.java:423)
        // org.benf.cfr.reader.bytecode.CodeAnalyser.getAnalysisOrWrapFail(CodeAnalyser.java:217)
        // org.benf.cfr.reader.bytecode.CodeAnalyser.getAnalysis(CodeAnalyser.java:162)
        // org.benf.cfr.reader.entities.attributes.AttributeCode.analyse(AttributeCode.java:95)
        // org.benf.cfr.reader.entities.Method.analyse(Method.java:355)
        // org.benf.cfr.reader.entities.ClassFile.analyseMid(ClassFile.java:768)
        // org.benf.cfr.reader.entities.ClassFile.analyseTop(ClassFile.java:700)
        // org.benf.cfr.reader.Main.doJar(Main.java:134)
        // org.benf.cfr.reader.Main.main(Main.java:189)
        throw new IllegalStateException("Decompilation failed");
    }
}