import java.util.zip.*;
import java.io.*;

public class ZipCrashTest {
    public static void main(String args[]) throws Exception {
       
        final StringBuilder sb = new StringBuilder();
        for (int i = 0; i < 100000; i++) sb.append("Hello, World\n");
        final byte[] data = sb.toString().getBytes();

       
        try (ZipOutputStream zo = new ZipOutputStream(new FileOutputStream("test1.zip"))) {
            zo.putNextEntry(new ZipEntry("world.txt")); zo.write(data, 0, data.length); zo.closeEntry();
            zo.putNextEntry(new ZipEntry("hello.txt")); zo.write(data, 0, data.length); zo.closeEntry();
        }

       
        try (ZipOutputStream zo = new ZipOutputStream(new FileOutputStream("test2.zip"))) {
            zo.putNextEntry(new ZipEntry("hello.txt")); zo.write(data, 0, data.length); zo.closeEntry();
            zo.putNextEntry(new ZipEntry("world.txt")); zo.write(data, 0, data.length); zo.closeEntry();
        }

       
        final ZipFile zf = new ZipFile("test1.zip");

       
        try (InputStream is = zf.getInputStream(zf.getEntry("hello.txt"))) {
            while (is.read() != -1) { /* do nothing with the data */ }
        }

       
        Runtime.getRuntime().exec("cp test2.zip test1.zip");

        try (InputStream is = zf.getInputStream(zf.getEntry("world.txt"))) {
            while (is.read() != -1) { /* do nothing */ }
        }
    }
}