Best Practices in Java

Which is the correct way to resolve following error? @Override

public void run() { Thread.sleep(300); }

• Surround with try/catch

• Add throws declaration

• Either A or B

• None of the mentioned

Which is the suitable name for the method used to check whether given number is prime or not?

• prime()

• checkprime()

• isPrime()

• getPrime()

When we have constructor based and setter based injection defined within an entity then which will be called by default?

• constructor

• setter method

Which is the default scope for beans in the spring?

• Prototype

• Singleton

What will be output of following code?

public class ChildThread extends Thread {

@Override public void run() {

System.out.println("Hello"); }}

public class ThreadDemo {

public static void main(String[] args) {

ChildThread t1 = new ChildThread();

t1.start();

t1.start(); }}

• Hello

• Hello

  Hello

• CTE

• RTE

Can one interface implements another interface?

• Yes

• No

Which is used to bind the metadata in hibernate?

• SessionFactory

• ServiceRegistry

• Configuration

• SessonRegistry

Where to place persistence.xml file?

• src

• any folder of project

• META-INF

• any package of project

Since java 8, an interface can have which types of methods?

• abstract

• static

• default

• all of the mentioned

By default spring boot transaction is auto commit?

• True

• False