Why you should use Java & SQL Online Test?

The Java & SQL -test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects: Forståelse av Java Basics Dyktig i objektorienterte programmeringskonsepter Evne til å håndtere unntak effektivt Sterk kunnskap om SQL -grunnleggende Kompetanse innen databasedesign Kompetanse i spørring og manipulering av data Dyktig i javakoding Erfaring med designmønstre Dyktig i multithreading og samtidighet Kunnskap om servlets og JSP

Java & SQL Online Test

Q: What topics are covered in the Java & SQL Online Test?

Java Basics Objektorientert programmering Unntak SQL Basics Databasedesign Spørring og manipulering av data Java -koding

About the test:

Java SQL -testen evaluerer kandidater om deres evne til å jobbe med relasjonsdatabaser ved hjelp av Java -programmeringsspråk. Testen vurderer kandidater på grunnleggende til avanserte konsepter av SQL -spørsmål, databasedesign og Java -programmering. Sentrale ferdigheter og emner som blir evaluert inkluderer forståelse av relasjonsdatabaser, SQL -spørsmål, Java Database Connectivity (JDBC), datamodellering og datamanipulering ved bruk av Java. Testen inkluderer også et kodingsspørsmål for å teste praktiske programmeringsferdigheter.

Covered skills:

Java Basics
Unntak
Databasedesign
Java -koding

Objektorientert programmering
SQL Basics
Spørring og manipulering av data

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9 reasons why

Adaface Java & SQL Test is the most accurate way to shortlist Java -utviklers

Reason #1

Tests for on-the-job skills

The Java & SQL Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Demonstrerer ferdighet i Java Basics
Bruker objektorienterte programmeringskonsepter effektivt
Håndterer unntak og feil effektivt
Viser en sterk forståelse av SQL -grunnleggende
Demonstrerer kunnskap om databasedesignprinsipper
Kunne spørre og manipulere data i SQL -databaser
Kompetent i javakoding

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface

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Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

Dette er bare en liten prøve fra biblioteket vårt med 10.000+ spørsmål. De faktiske spørsmålene om dette Java & SQL -test vil være ikke-googlable.

🧐 Question
Easy Custom Exception Exception Handling Custom Exceptions	Try practice test
What does the following code output?
Hard Holding References	Try practice test
What does the following Java code output?
Medium Abstract Interface OOPs Interfaces	Try practice test
Given following interface: Which of these are correct classes?
Medium Garbage Collection Garbage Collection	Try practice test
After which line is "bs" object, created on Line 4, eligible for garbage collection?
Hard Static Init Blocks OOPs	Try practice test
What does the following code output? 1) G A B E D H 2) G B A D E H 3) G B A D E H C F 4) C F G A B E D H 5) C F G B A D E H 6) G C F A B E D H 7) G C F B A D E H
Medium Multi Select JOIN GROUP BY	Try practice test
Consider the following SQL table: How many rows does the following SQL query return?
Medium nth highest sales Nested queries User Defined Functions	Try practice test
Consider the following SQL table: Which of the following SQL commands will find the ‘nth highest Sales’ if it exists (returns null otherwise)?
Medium Select & IN Nested queries	Try practice test
Consider the following SQL table: Which of the following SQL queries would return the year when neither a football or cricket winner was chosen?
Medium Sorting Ubers Nested queries Join Comparison operators	Try practice test
Consider the following SQL table: What will be the first two tuples resulting from the following SQL command?
Hard With, AVG & SUM MAX() MIN() Aggregate functions	Try practice test
Consider the following SQL table: How many tuples does the following query return?
Easy Registration Queue Logic Queues	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
Medium Visitors Count Strings Logic	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill
	Easy Custom Exception Exception Handling Custom Exceptions	2 mins Java	Try practice test
What does the following code output?
	Hard Holding References	2 mins Java	Try practice test
What does the following Java code output?
	Medium Abstract Interface OOPs Interfaces	2 mins Java	Try practice test
Given following interface: Which of these are correct classes?
	Medium Garbage Collection Garbage Collection	2 mins Java	Try practice test
After which line is "bs" object, created on Line 4, eligible for garbage collection?
	Hard Static Init Blocks OOPs	2 mins Java	Try practice test
What does the following code output? 1) G A B E D H 2) G B A D E H 3) G B A D E H C F 4) C F G A B E D H 5) C F G B A D E H 6) G C F A B E D H 7) G C F B A D E H
	Medium Multi Select JOIN GROUP BY	2 mins SQL	Try practice test
Consider the following SQL table: How many rows does the following SQL query return?
	Medium nth highest sales Nested queries User Defined Functions	3 mins SQL	Try practice test
Consider the following SQL table: Which of the following SQL commands will find the ‘nth highest Sales’ if it exists (returns null otherwise)?
	Medium Select & IN Nested queries	3 mins SQL	Try practice test
Consider the following SQL table: Which of the following SQL queries would return the year when neither a football or cricket winner was chosen?
	Medium Sorting Ubers Nested queries Join Comparison operators	3 mins SQL	Try practice test
Consider the following SQL table: What will be the first two tuples resulting from the following SQL command?
	Hard With, AVG & SUM MAX() MIN() Aggregate functions	2 mins SQL	Try practice test
Consider the following SQL table: How many tuples does the following query return?
	Easy Registration Queue Logic Queues	30 mins Coding	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Medium Visitors Count Strings Logic	30 mins Coding	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Custom Exception Exception Handling Custom Exceptions	Java	Easy	2 mins	Try practice test
What does the following code output?
	Holding References	Java	Hard	2 mins	Try practice test
What does the following Java code output?
	Abstract Interface OOPs Interfaces	Java	Medium	2 mins	Try practice test
Given following interface: Which of these are correct classes?
	Garbage Collection Garbage Collection	Java	Medium	2 mins	Try practice test
After which line is "bs" object, created on Line 4, eligible for garbage collection?
	Static Init Blocks OOPs	Java	Hard	2 mins	Try practice test
What does the following code output? 1) G A B E D H 2) G B A D E H 3) G B A D E H C F 4) C F G A B E D H 5) C F G B A D E H 6) G C F A B E D H 7) G C F B A D E H
	Multi Select JOIN GROUP BY	SQL	Medium	2 mins	Try practice test
Consider the following SQL table: How many rows does the following SQL query return?
	nth highest sales Nested queries User Defined Functions	SQL	Medium	3 mins	Try practice test
Consider the following SQL table: Which of the following SQL commands will find the ‘nth highest Sales’ if it exists (returns null otherwise)?
	Select & IN Nested queries	SQL	Medium	3 mins	Try practice test
Consider the following SQL table: Which of the following SQL queries would return the year when neither a football or cricket winner was chosen?
	Sorting Ubers Nested queries Join Comparison operators	SQL	Medium	3 mins	Try practice test
Consider the following SQL table: What will be the first two tuples resulting from the following SQL command?
	With, AVG & SUM MAX() MIN() Aggregate functions	SQL	Hard	2 mins	Try practice test
Consider the following SQL table: How many tuples does the following query return?
	Registration Queue Logic Queues	Coding	Easy	30 mins	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Visitors Count Strings Logic	Coding	Medium	30 mins	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

Reason #4

1200+ customers in 75 countries

Med Adaface var vi i stand til å optimalisere den første screeningsprosessen vår med oppover 75 %, og frigjorde dyrebar tid for både ansettelsesledere og vårt talentanskaffelsesteam!

Brandon Lee, Leder for mennesker, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Java & SQL -test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Java & SQL -test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & benchmarks

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Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring

Learn more

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About the Java & SQL Assessment Test

Why you should use Pre-employment Java & SQL Online Test?

The Java & SQL -test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

Forståelse av Java Basics
Dyktig i objektorienterte programmeringskonsepter
Evne til å håndtere unntak effektivt
Sterk kunnskap om SQL -grunnleggende
Kompetanse innen databasedesign
Kompetanse i spørring og manipulering av data
Dyktig i javakoding
Erfaring med designmønstre
Dyktig i multithreading og samtidighet
Kunnskap om servlets og JSP

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the Java & SQL Online Test?

Objektorientert programmering
Objektorientert programmering (OOP) er et programmeringsparadigme som gir mulighet for organisering og styring av kode gjennom bruk av objekter, klasser og arv. Denne ferdigheten evaluerer individets evne til å anvende OOP -prinsipper, inkludert innkapsling, polymorfisme og abstraksjon, i Java. Å måle denne ferdigheten er avgjørende ettersom OOP er mye brukt i Java -utvikling og fremmer modulær og gjenbrukbar kode.
unntak
Unntak refererer til håndtering av uforutsette hendelser som kan forstyrre den normale strømmen av strømmen av Programutførelse. Denne ferdigheten innebærer å forstå ulike typer unntak, for eksempel sjekket og ukontrollerte unntak, og bruke prøvekampblokker for å håndtere dem på riktig måte. Måling av denne ferdigheten sikrer at kandidaten effektivt kan håndtere feilscenarier og skrive robust og pålitelig Java -kode.
SQL -grunnleggende ). Dette inkluderer emner som å lage og manipulere databaser, definere tabeller og spørre data. Å måle denne ferdigheten er viktig da SQL er et standardspråk for å samhandle med relasjonsdatabaser, og en sterk forståelse av SQL -grunnleggende er avgjørende for å jobbe med datalagring og gjenfinning. </p> <h4> Databasedesign
Databasedesign innebærer å lage struktur og organisering av et databasesystem. Denne ferdigheten omfatter å designe databaseskjemaer, etablere forhold mellom tabeller og optimalisere databaseytelsen. Å måle denne ferdigheten er viktig, da en godt designet database forbedrer dataintegriteten, reduserer redundans og forbedrer den generelle systemeffektiviteten.
Spørring og manipulering av data
Spørring og manipulering av data fokuserer på å hente og Endre data lagret i databaser ved bruk av SQL. Denne ferdigheten evaluerer kandidatens evne til å skrive komplekse SQL -spørsmål, utføre operasjoner som innlegg, oppdateringer og sletter og forstå databaseoptimaliseringsteknikker. Måling av denne ferdigheten er avgjørende da den vurderer kandidatens kompetanse i å jobbe med den virkelige data og deres evne til effektivt å manipulere og administrere den.
Java-koding
Java-koding tester kandidatens evne For å skrive riktig og effektiv Java -kode for å løse spesifikke problemer eller implementere ønsket funksjonalitet. Denne ferdigheten dekker ulike aspekter, inkludert kodestruktur, algoritmisk tenking og overholdelse av beste praksis. Å måle denne ferdigheten er avgjørende for å vurdere kandidatens praktiske programmeringsevner og deres ferdigheter i å implementere løsninger ved hjelp av Java-programmeringsspråk.
Full list of covered topics
The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for Java & SQL -test to be based on.
Java -variabler
Java -datatyper
Java kontrollstrøm
Java -operatører
Java -matriser
Java -klasser
Java arv
Java -polymorfisme
Java -innkapsling
Java unntakshåndtering
SQL -datatyper
SQL Table Creation
SQL -spørsmål
SQL blir med
SQL -aggregasjoner
SQL -begrensninger
SQL Subqueries
SQL -indeksering
SQL -visninger
SQL -transaksjoner
Database Normalisering
Relasjonsdatabasedesign
Databaseskjemaer
Syreegenskaper
Spørringsoptimalisering
Entity-Relationship (ER) diagrammer
Datamodellering
Primærnøkler
Utenlandske nøkler
Databaseindeksering
Databasevisninger
Database utløser
Java -fil I/O
Java unntakstyper
Unntakhåndtering av beste praksis
Java prøver-fangst-finalt
Sjekket mot ukontrollerte unntak
Java tilpassede unntak
SQL Sett inn utsagn
SQL -oppdateringsuttalelser
SQL sletter utsagn
SQL Velg uttalelser
SQL -filtrering
SQL -sortering
SQL Aggregating
SQL -gruppering
Java objektorientert design
Java arv vs komposisjon
Java abstraksjon
SQL -normalisering
SQL Denormalisering
SQL -indekseringsstrategier
Java -kodingskonvensjoner
Java feilsøking
Java -kodeoptimalisering
SQL -datamanipulering
SQL Data Definisjon
SQL -datakontroll

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What roles can I use the Java & SQL Online Test for?

Java -utvikler
Programvareingeniør Java
Backend Java Developer
SQL -utvikler
Java Full Stack Developer
Java Application Developer
SQL Database Developer

How is the Java & SQL Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

Demonstrert kompetanse i ytelse av ytelse
Evne til å optimalisere SQL -spørsmål
Erfaring i avanserte databasekonsepter
Dyktig i applikasjonstesting og feilsøking
Kunnskap om dvalemodus rammeverk
Sterk forståelse av vårramme
Dyktig i avslappende webtjenester
Erfaring med mikroservices arkitektur
Evne til å utvikle skalerbare og robuste applikasjoner
Kompetanse innen smidig programvareutviklingspraksis
Sterk kunnskap om designprinsipper og mønstre

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

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Ansettelseslederne mente at de gjennom de tekniske spørsmålene de stilte under panelintervjuene, var i stand til å fortelle hvilke kandidater som scoret bedre, og differensierte med de som ikke skåret like godt. De er svært fornøyd med kvaliteten på kandidatene som er på listen med Adaface-screeningen.

85%

Reduksjon i screeningstid

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Java & SQL Hiring Test Vanlige spørsmål

Kan jeg kombinere flere ferdigheter til en tilpasset vurdering?

Ja absolutt. Tilpassede vurderinger er satt opp basert på stillingsbeskrivelsen din, og vil inneholde spørsmål om alle må-ha ferdigheter du spesifiserer.

Har du noen anti-juksende eller proktoreringsfunksjoner på plass?

Vi har følgende anti-juksede funksjoner på plass:

Ikke-googlable spørsmål
IP Proctoring
Nettproctoring
Webcam Proctoring
Deteksjon av plagiering
Sikker nettleser

Les mer om Proctoring -funksjonene.

Hvordan tolker jeg testresultater?

Den viktigste tingen å huske på er at en vurdering er et eliminasjonsverktøy, ikke et seleksjonsverktøy. En ferdighetsvurdering er optimalisert for å hjelpe deg med å eliminere kandidater som ikke er teknisk kvalifisert for rollen, det er ikke optimalisert for å hjelpe deg med å finne den beste kandidaten for rollen. Så den ideelle måten å bruke en vurdering på er å bestemme en terskelpoeng (vanligvis 55%, vi hjelper deg med å benchmark) og invitere alle kandidater som scorer over terskelen for de neste rundene med intervjuet.

Hvilken opplevelsesnivå kan jeg bruke denne testen til?

Hver ADAFACE -vurdering er tilpasset din stillingsbeskrivelse/ ideell kandidatperson (våre fageksperter vil velge de riktige spørsmålene for din vurdering fra vårt bibliotek med 10000+ spørsmål). Denne vurderingen kan tilpasses for ethvert opplevelsesnivå.

Får hver kandidat de samme spørsmålene?

Ja, det gjør det mye lettere for deg å sammenligne kandidater. Alternativer for MCQ -spørsmål og rekkefølgen på spørsmål er randomisert. Vi har anti-juksing/proctoring funksjoner på plass. I vår bedriftsplan har vi også muligheten til å lage flere versjoner av den samme vurderingen med spørsmål med lignende vanskelighetsnivåer.