Morgan Stanley | Java spring boot microservice | Video Interview

#javainterviewquestion #ola #springboot
Microservice
Springboot
Java 8

Real time interview:

real time interview questions and answer

[soulfulGirl_]

I think you told read has a lock in concurrent hashmap that's not true, we have lock only on write operations. 😊, Great job for this video really appreciate.

[mahi]

Programing:

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

public class {

public static void main(String[] args) {
List input1 = new ArrayList<>();
input1.add("A");
input1.add("B");
input1.add("C");
input1.add("D");
input1.add("E");

List<String> input2 = new ArrayList<>();
input2.add("1");
input2.add("2");
input2.add("3");
input2.add("4");
input2.add("5");

Operations operations = new Operations();

AlphabeticThread alphabeticThread = new AlphabeticThread(operations, input1);
Thread alphThread = new Thread(alphabeticThread);
alphThread.start();

NumberThread numberThread = new NumberThread(operations, input2);
Thread numThread = new Thread(numberThread);
numThread.start();
}
}

class AlphabeticThread implements Runnable
{
Operations operations;
List<String> input1;
AlphabeticThread(Operations operations, List<String> input1)
{
this.operations = operations;
this.input1 = input1;
}

@Override
public void run() {
synchronized (operations)
{
for(String s: input1) {
operations.updateRecord(s);
try {
operations.wait();
operations.notify();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}

class NumberThread implements Runnable
{
Operations operations;
List<String> input2;
NumberThread(Operations operations, List<String> input2)
{
this.operations = operations;
this.input2 = input2;
}
@Override
public void run() {
synchronized (operations)
{
for(String s: input2) {
operations.updateRecord(s);
operations.notify();
try {
operations.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}

class Operations
{

public void updateRecord(String output)
{
System.out.println(output);
}
}

[punyabikash]

Thank you bro....Excellent its really helpful keep posting 👌👌

[murahariraofam]

Were you talking about vert.x??? Did you add this in your resume??

[mahaperumal]

How many rounds in Morgan Stanley? I have less knowledge about DSA part so please suggest how to prepare the interview

[gulfamhassan]

32:50 you need to use wait and notify method in this scenario

[syedmohsin]

Hi..
In cognizant what will be the package for Sr Software Engineer B2 position?

[abhaykumar-tkxr]

At the time of interview, how much experience do you have ?

[sarojsahoo]

Thread sleep wont be helpful here, because My Requirement is different here, should go for wait and notify only

[mahi]

LibraryMangament system works well using concurrent hash map if you have hash key on starting letter of book name...if multiple theards tries to read and update rack info at a time so it will give error. just think about hash value.