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public class PersonValidator {

    public boolean validate(Person person) {
        boolean valid = person != null;
        if (valid) {
            valid = person.getName() != null;
        }
        if (valid) {
            valid = person.getEmail() != null;
        }

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@RunWith(JunitSuiteRunner.class)
public class FizzBuzzFluentTest {
    {
        describe("FizzBuzz game", it -> {

            it.should("say Fizz", expect -> {
                FizzBuzz fizzBuzz;
                Given: 
                fizzBuzz = new FizzBuzz(3);

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# As it is a name used to identify clusters, use a name with uniqueness and a meaning.
cluster.name: ElasticSearch-cluster
 
# A node name is automatically created but it is recommended to use a name that is discernible in a cluster like a host name.
node.name: "Elasticsearch.my01"
 
# The default value of the following two is all true. node.master sets whether the node can be the master, while node.data is a configuration for whether it is a node to store data. Usually you need to set the two values as true, and if the size of a cluster is big, you should adjust this value by node to configure three types of node. More details will be explained in the account of topologies configuration later.
node.master: true
node.data: true
 

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select 
  repository_language,
  type,
  count(distinct(repository_url)) as active_repos_by_url,
  count(repository_language) as events,
  YEAR(created_at) as year,
  QUARTER(created_at) as quarter
from [githubarchive:github.timeline]
where
    (

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public  void aboutMyDay() {
	boolean isWakeUp = wakeUp();
	if( isWakeUp ) {
		boolean isShower = shower();
		if( isShower ) {
			boolean isClothe = putClothe();
			if( isClothe ) {
			    ...
			}
		}

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if (x < 0) {
  throw new Exception("ข้อมูลไม่สามารถติดลบได้นะ");
} else {
  System.out.println("แจ่ม ทำงานได้");
}

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public class Money {
    private int amount;
    private String currency;

    public Money(int amount, String currency) {
        this.amount = amount;
        this.currency = currency;
    }

    public int amount() {

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public class Money {
    ...

    public Money add(Money money) {
        return new Money(amount() + money.amount(), currency());
    }

    ...

}

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private static final String COMMA_DELIMITER = ",";

//แบบที่ 1
String[] names = {"I", "love", "You"};
System.out.println( String.join(COMMA_DELIMITER, names) );

//แบบที่ 2        
System.out.println(String.join(COMMA_DELIMITER, "I", "love", "You"));

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evaluationDependsOn(":app")

apply plugin: 'java'

dependencies {
    def androidModule = project(':app')

    testCompile project(path: ':app', configuration: 'debugCompile')

    def debugVariant = androidModule.android.applicationVariants.find({it.name == 'debug'})