SiAust

class ArithmeticFunction {

	private static enum Operation {
		add {
			@Override
			int apply(int a, int b) {
				return a + b;
			}
		}, subtract {
			@Override

SiAust

import javax.imageio.IIOException;
import javax.swing.*;
import java.io.*;

public class HyperSkill {

    public static void main(String[] args) {
        Person simon = new Person("simon", 21, new Address("stillwater", "uk"));
        String fileName = "C:\\users\\si_au\\desktop\\simon.data";
        try {

SiAust

plugins {
    id 'org.springframework.boot' version '2.3.1.RELEASE'
    id 'io.spring.dependency-management' version '1.0.9.RELEASE'
    id 'java'
}

group = 'io.github.siaust'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'

SiAust

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.example.web_quiz_app.WebQuizAppApplication]; 
nested exception is org.springframework.context.annotation.ConflictingBeanDefinitionException: 
Annotation-specified bean name 'securityConfig' for bean class [com.example.web_quiz_app.Security.SecurityConfig] 
conflicts with existing, non-compatible bean definition of same name and class [io.github.siaust.web_quiz_app.Config.SecurityConfig]
	at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:188) ~[spring-context-5.2.7.RELEASE.jar:5.2.7.RELEASE

SiAust

public static List<Integer> sortOddEven(List<Integer> numbers) {

        // sort odd and even
        // then sort odd asc, even desc
        Comparator<Integer> byOddFirst = (i1, i2) -> (i1 | 1) == i1 ? -1 : (i2 | 1) > i2 ? 1 : 0;
        Comparator<Integer> byOddAscEvenDesc = (i1, i2) -> {
            if ((i1 | 1) == i1 && (i2 | 1) == i2) {
                return Integer.compare(i1, i2);
            } else if ((i1 | 1) > i1 && (i2 | 1) > i2) {
                return Integer.compare(i1, i2) * -1;

SiAust

import org.junit.Test;
import static org.junit.Assert.assertEquals;

import java.util.Arrays;

public class JUnitTest {
    @Test
    public void CalculatorTest() {
        Calculator calculator = new Calculator();
        assertEquals(10, calculator.sum("1234"));

SiAust

public class HttpUtils {
    private static HttpServer server;
    private static final String CLIENT_ID = "6edb9b1ac21042abacc6daaf0fbc4c4d";
    private static final String CLIENT_SECRET = ""; // todo: remove before committing to Github.
    private static final String REDIRECT_ID = "http://localhost:8080";

    public static void startHttpServer() {
        try {
            server = HttpServer.create();
            server.bind(new InetSocketAddress(8080), 0);

SiAust

import java.util.Scanner;

class Sandwich {

    private String bun;
    private int salad;
    private int cheese;
    private int cucumber;
    private int ham;

SiAust

// Do not remove imports
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.WildcardType;
import java.util.Set;
import java.util.Scanner;

class ListParameterInspector {
    // Do not change the method

SiAust

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
/**
 * ConcreteComponent - Geek.
 **/
class Geek {

    private String type;
    private List<String> languages;