codinko

-- junit-jupiter-engine alone is good enough to write test cases in Junit 5..
<dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter-engine</artifactId>
        <version>5.9.1</version>
        <scope>test</scope>
</dependency>

-- The above one will add transitive dependencies as below..
Among these dependencies, there is 'junit-jupiter-api' which contains the classes and interfaces that is required to compile your test cases..

codinko

(1) // Java program to illustrate join() method in Java

import java.lang.*;

public class JoinDemo implements Runnable {

    public void run() {
        System.out.println("INSIDE Thread t run() .. Thread t starting.........................................................");
        try {
            System.out.println("Before sleep");

codinko

package com.learn.java;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

public class FindEmployeesWithSameSalary {

codinko

package com.learn.java;

import java.util.ArrayList;
import java.util.List;

public class TryFinally {

    public static void main(String[] args) {

        List a = null;

codinko

package com.learn.java;

public class Main {

    public static void main(String[] args) {

        //case-1:   serializing a custom class that does not implement serializable interface
        ////OUTPUT - Got exception while doing serialization... : java.io.NotSerializableException: com.learn.java.Student

        //case-2:   serializing a custom class that  implement serializable interface, but no serialversionUID. Deserialize it . ( if JVM same then it will be success..

codinko

class Singleton {

	private static Singleton instance = null;
	public String s;
	private Singleton()
	{
		s = "hey i am ston";
	}

	public static Singleton getInstance()

codinko

// Java Program to Create An Immutable Class

import java.util.HashMap;
import java.util.Map;

final class Student {

	private final String name;
	private final int rollNo;
	private final Map<String, String> map1;

codinko

<property name="logAbandoned" value="true"/>
<property name="removeAbandoned" value="true"/>
<property name="removeAbandonedTimeout" value="30"/>
<property name="timeBetweenEvictionRunsMillis" value="30000" />

codinko

<bean id="XXX" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
2
      <property name="driverClassName" value="oracle.jdbc.OracleDriver"/>
3
      <property name="url" value="${oracle.url}"/>
4
      <property name="username" value="${oracle.user}"/>
5
      <property name="password" value="${oracle.password}"/>
6

codinko

jdk1.8.0_231

{1=key = 1 | value = mango  | leftValue = mango |  rightValue = null}
******************************************************
{1=key = 1 | value = mango  | leftValue = apple |  rightValue = null, 
 2=key = 2 | value = apple  | leftValue = null |  rightValue = mango}
******************************************************
{1=key = 1 | value = mango  | leftValue = apple |  rightValue = null, 
 2=key = 2 | value = apple  | leftValue = orange |  rightValue = mango, 
 3=key = 3 | value = orange  | leftValue = null |  rightValue = apple}