使用java类破解MyEclipse

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今天在网上查资料的时候无意中发现使用java类破解MyEclipse的注册码问题。跟大家分享一下

1、建立JAVA Project，随便命名，只要符合规则就行

2、在刚刚建好的Project右击src，新建一个类，命名为MyEclipseGen，把.java里本来有的代码全部删掉，再把下面的代码复制到文件中。

import java.io.*;

public class MyEclipseGen {

    private static final String LL = "Decompiling this copyrighted software is a violation of both your license agreement and the Digital Millenium Copyright Act of 1998 (http://www.loc.gov/copyright/legislation/dmca.pdf). Under section 1204 of the DMCA, penalties range up to a $500,000 fine or up to five years imprisonment for a first offense. Think about it; pay for a license, avoid prosecution, and feel better about yourself.";

    public String getSerial(String userId, String licenseNum) {

        java.util.Calendar cal = java.util.Calendar.getInstance();

        cal.add(, );

        cal.add(, -);

        java.text.NumberFormat nf = new java.text.DecimalFormat("");

        licenseNum = nf.format(Integer.valueOf(licenseNum));

        String verTime = new StringBuilder("-")

                .append(new java.text.SimpleDateFormat("yyMMdd").format(cal

                        .getTime())).append("").toString();

        String type = "YE3MP-";

        String need = new StringBuilder(userId.substring(, )).append(type)

                .append("").append(licenseNum).append(verTime).toString();

        String dx = new StringBuilder(need).append(LL).append(userId)

                .toString();

        int suf = this.decode(dx);

        String code = new StringBuilder(need).append(String.valueOf(suf))

                .toString();

        return this.change(code);

    }

    private int decode(String s) {

        int i;

        char[] ac;

        int j;

        int k;

        i = ;

        ac = s.toCharArray();

        j = ;

        k = ac.length;

        while (j < k) {

            i = ( * i) + ac[j];

            j++;

        }

        return Math.abs(i);

    }

    private String change(String s) {

        byte[] abyte0;

        char[] ac;

        int i;

        int k;

        int j;

        abyte0 = s.getBytes();

        ac = new char[s.length()];

        i = ;

        k = abyte0.length;

        while (i < k) {

            j = abyte0[i];

            if ((j >= ) && (j <= )) {

                j = (((j - ) + ) % ) + ;

            } else if ((j >= ) && (j <= )) {

                j = (((j - ) + ) % ) + ;

            } else if ((j >= ) && (j <= )) {

                j = (((j - ) + ) % ) + ;

            }

            ac[i] = (char) j;

            i++;

        }

        return String.valueOf(ac);

    }

    public MyEclipseGen() {

        super();

    }

    public static void main(String[] args) {

        try {

            System.out.println("please input register name:");

            BufferedReader reader = new BufferedReader(new InputStreamReader(

                    System.in));

            String userId = null;

            userId = reader.readLine();

            MyEclipseGen myeclipsegen = new MyEclipseGen();

            String res = myeclipsegen.getSerial(userId, "");

            System.out.println("Serial:" + res);

            reader.readLine();

        } catch (IOException ex) {

        }

    }

}