jnizet

@Override
public boolean login(User user) {
    // Check if we have a valid user/pass pair
    String hashedPassword = hash(user.getPassword());
    String jpql = "SELECT u FROM User u WHERE u.username=:userName AND u.password=:password";
    TypedQuery<User> query = entityManager.createQuery(jpql, User.class);
    query.setParameter("userName", user.getUsername());
    query.setParameter("password", hash);
    List<User> users = query.getResultList();
    return !users.isEmpty();

jnizet

        try {
            bar.libraryCall("hello", 1);
            int i = 1;
            if (i < 0) {
                throw new NoSuchMethodError();
            }
        }
        catch (NoSuchMethodError e) {
            bar.libraryCall("hello");
        }

jnizet

package com.foo;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CountDownLatch;

public class SynchronizedCollectionIteration {
    public static void main(String[] args) {
        final CountDownLatch latch = new CountDownLatch(1);

jnizet

package com.foo;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CountDownLatch;

public class UnsynchronizedCollectionAccess {
    public static void main(String[] args) throws InterruptedException {
        final CountDownLatch latch = new CountDownLatch(1);
        final List<Integer> list = new ArrayList<Integer>();

jnizet

public class CyclicBarrierTest {
    public static void main(String[] args) {
        final CyclicBarrier barrier = new CyclicBarrier(2);

        Runnable r = new Runnable() {
            @Override
            public void run() {
                try {
                    for (int i = 0; i < 5; i++) {
                        System.out.println(Thread.currentThread().getName() + " waits for the other ones");

jnizet

public class ExceptionRethrow {

    void foo() throws IOException {
        try {
            bar();
        }
        catch (Exception e) {
            throw e;
        }
    }

jnizet

public class VerticalTabDemo {
    public static String buildMessage() {
        StringBuilder message = new StringBuilder();
        message.append('\u000b');
        message.append('H');
        char[] characters = message.toString().toCharArray(); // returns length 2
        System.out.println("characters.length in buildMessage = " + characters.length);
        dumpString(message.toString());
        return message.toString();
    }

jnizet

public class Bar {
}

public class Foo {
    @Autowired
    public void setBar(Bar bar) {
        System.out.println("setBar() was called");
    }
}

jnizet

public class LocalDateExample {
    public static void main(String[] args) {
        LocalDate ld1 = LocalDate.now();
        LocalDate ld2 = LocalDate.now().plusDays(2);
        System.out.println("comparison = " + compare(ld1, ld2));
    }

    private static <T extends Temporal> int compare(T t1, T t2) {
        Comparable<T> c1 = (Comparable<T>) t1;
        return c1.compareTo(t2);

jnizet

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

public class LockFileTest {
    public static void main(String[] args) throws IOException {
        File lockFile = File.createTempFile("foo", ".lock");
        int read;