r-winkler

public class JUnitStringAssert {

    private static final String DEV = "Developer";

    @Test
    public void testString() {
        assertNotNull(DEV);
        assertFalse("".equals(DEV));
        assertTrue(DEV.startsWith("Dev"));
        assertTrue(DEV.contains("elo"));

r-winkler

public class HamcrestStringAssert {

    private static final String DEV = "Developer";

    @Test
    public void testString() {
        assertThat(DEV, is(notNullValue()));
        assertThat(DEV, not(isEmptyString()));
        assertThat(DEV, startsWith("Dev"));
        assertThat(DEV.length(), equalTo(9));

r-winkler

public class AssertJStringAssert {

    private static final String DEV = "Developer";

    @Test
    public void testStrings_WithAssertJ() {
        assertThat(DEV).isNotNull().isNotEmpty().startsWith("Dev").contains("elo").hasSize(9);
    }
}

r-winkler

@RestController
public class HelloController {

    @RequestMapping("/hello")
    public String sayHello(HttpServletResponse response) throws InterruptedException {
        response.setHeader("Cache-Control", "max-age=5");
        TimeUnit.SECONDS.sleep(2);
        return "Hello World!";
    }
}

r-winkler

@Configuration
class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .antMatchers("/hello").permitAll()
                .anyRequest().authenticated();

        http.headers().cacheControl().disable();

r-winkler

function foo(){
  console.log(this.bar);
}

var bar="bar1";

foo();  // bar1

r-winkler

function foo(){
  console.log(this.bar);
}

var o1 = {
  bar: "bar2",
  foo: function() { console.log(this.bar);}
};

var bar="bar1";

r-winkler

List<Item> items = Arrays.asList(
  new Item("A", 10),
  new Item("B", 20),
  new Item("C", 30),
  new Item("A", 40),
  new Item("B", 50),
  new Item("C", 60));

r-winkler

 Map<String, Integer> accumulator = items.stream().collect(Collectors.groupingBy(Item::getName, Collectors.summingInt(Item::getValue)));

r-winkler

List<Item> result = new ArrayList<>();

for (Map.Entry<String,Integer> entry : accumulator.entrySet()){
  result.add(new Item(entry.getKey(), entry.getValue()));
}