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@rajasekarm6516 3 күн бұрын
very clear and easy to understand
@RamNJava 3 күн бұрын
Thanks! I'm glad you found it helpful.
@snehaljadhav1073 3 күн бұрын
Explanation crisp and simple
@RamNJava 3 күн бұрын
Thank you so much 🙂
@ganeshkrishnaprasad3785 4 күн бұрын
Thank you ji
@RamNJava 3 күн бұрын
Welcome
@alimnh412 7 күн бұрын
Thank you sir. You have helped me a lot 🥰
@RamNJava 7 күн бұрын
Happy to help
@SumitSingh-r3p9d 9 күн бұрын
❤
@omalinga 10 күн бұрын
Thank you very much for knowledge sharing. it just worked fine.
@RamNJava 10 күн бұрын
Glad it helped
@Noctorinn 11 күн бұрын
wonderful
@RamNJava 11 күн бұрын
Glad you enjoyed it!
@harshithaprakash852 14 күн бұрын
Thanks for this, was looking for the capacity in case if the string is extended and got the exact information, thank you.
@RamNJava 14 күн бұрын
Glad it helped
@zahirulislam2097 15 күн бұрын
Thank you for your videos. This was very helpful for me. Please do a video on, how to upload file to s3 from Spring boot rest API and download as well. Thanks a lot again.
@RamNJava 15 күн бұрын
Great idea! I'll add it to my list of topics to cover.
@dnbdrive 22 күн бұрын
Thanks for video! Okay?)
@RamNJava 19 күн бұрын
Glad you found it helpful!
@rath_2617 22 күн бұрын
Thanks Mr.Ram this video solved my problem. But I got a doubt from it. Does the package name has to be same in both producer and consumer end ? why ? could you please explain ?
@mbegaliful 23 күн бұрын
cool!
@nawwintphyu1873 26 күн бұрын
Thank you so much!
@RamNJava 26 күн бұрын
Glad it helped!
@nawwintphyu1873 26 күн бұрын
Thank you so much!
@RamNJava 26 күн бұрын
You're welcome!
@jyoshnajoe877 Ай бұрын
Thanks for making it Simple and short
@RamNJava Ай бұрын
Glad to help you understand this fundamental concept!
@fadiop1247 Ай бұрын
Thank You
@RamNJava Ай бұрын
You're welcome
@RavindarMadishetty Ай бұрын
How to handle when we dont have .pem file or not taken back up of it?
@RamNJava Ай бұрын
If you've lost your `.pem` file (the private key) for an AWS EC2 instance and do not have a backup, it can be challenging to access the instance. However, there are methods you can use to regain access or work around the issue: --- ### **1. Access via Another User with SSH Access** - If other users have access to the instance, request them to log in and share their private key with you temporarily or assist you in adding your new key to the server. --- ### **2. Recover Access via Systems Manager (SSM)** - If **AWS Systems Manager** (SSM) is enabled on the instance, you can use SSM Session Manager to gain access to the server without needing the `.pem` file. - Steps: 1. Go to the AWS **Systems Manager** console. 2. Navigate to **Session Manager**. 3. Start a new session with your instance. 4. Once connected, you can update the SSH authorized keys with a new public key. --- ### **3. Use the EC2 Instance to Add a New Key Pair** 1. **Create a New Key Pair**: - In the AWS Management Console, go to **EC2 > Key Pairs**. - Create a new key pair and download the `.pem` file. 2. **Stop and Detach the Root Volume**: - Stop the instance. - Detach the root volume from the instance. 3. **Attach the Root Volume to Another Instance**: - Attach the volume to a running instance where you have SSH access. 4. **Mount the Volume**: - SSH into the helper instance. - Mount the attached volume to a directory (e.g., `/mnt/temp`). ```bash sudo mkdir /mnt/temp sudo mount /dev/xvdf1 /mnt/temp ``` 5. **Update the `authorized_keys` File**: - Navigate to the mounted volume: ```bash cd /mnt/temp/home/ec2-user/.ssh/ ``` - Add the new public key from your new key pair to `authorized_keys`: ```bash echo "new-public-key" >> authorized_keys ``` 6. **Detach and Reattach the Volume**: - Unmount the volume: ```bash sudo umount /mnt/temp ``` - Detach the volume from the helper instance. - Reattach it as the root volume of the original instance. 7. **Start the Original Instance**: - Start the instance and use your new `.pem` file to SSH into it. --- ### **4. Restore from Backup** - If you have an AMI (Amazon Machine Image) or a snapshot of your instance, create a new instance or volume from the backup and set it up with a new key pair. --- ### **5. Contact AWS Support** - If none of the above methods work, you can contact AWS Support. While they do not have access to your instance, they can provide guidance and options to recover your data or access your instance. --- ### **Preventive Measures** 1. **Always download and back up your `.pem` file** securely in multiple locations. 2. Enable **AWS Systems Manager** on your instances for additional access options. 3. Regularly create snapshots or AMIs of critical instances. By following these steps, you can recover access to your EC2 instance even if you've lost the `.pem` file.
@RavindarMadishetty Ай бұрын
How to handle when we don't have or not taken back up of it?
@Mr.AKSHAY355 Ай бұрын
Thank you sir it's helped me lot!.
@RamNJava Ай бұрын
You're welcome!
@sendsanjay Ай бұрын
it is good tutorial it give all thing in summarize manner well done
@RamNJava Ай бұрын
Thanks
@respect-editz6918 Ай бұрын
Bro 11 years ago 😮
@RamNJava Ай бұрын
Hi, Thanks 🙂 Playlist Link: kzbin.infoplaylists Java Blog - ramj2ee.blogspot.com/2015/05/all-java-ee-linkshtml.html Videos link: kzbin.infovideos Channel URL: youtube.com/@RamNJava Join Now for Exclusive Early Access - Special Offer!: kzbin.info/door/hwKlOVR041tngjerWxVccwjoin You can find the Playlist and Video for the below topics in the above links and in each youtube video description You can find the links to download the Java code 1. Basic and Advanced Java 2. Servlets and JDBC 3. Spring, and Spring boot, JMS, RabbitMQ, Kafka, Apache Maven, and Apache Gradle 4. RESTFul Web Services, SOAP Web Services, JSON and XML 5. SQL, MySQL, Oracle, and MongoDB 6. Java Design Patterns 7. Apache server, Tomcat, and Eclipse 8. Amazon AWS 9. System Design 10. Computer Tricks and Tips And More... Regards, Ram. N
@rohanpatil2104 Ай бұрын
Thanks , it worked perfectly.
@RamNJava Ай бұрын
Hi, Thanks 🙂 Playlist Link: kzbin.infoplaylists Java Blog - ramj2ee.blogspot.com/2015/05/all-java-ee-linkshtml.html Videos link: kzbin.infovideos Channel URL: youtube.com/@RamNJava Join Now for Exclusive Early Access - Special Offer!: kzbin.info/door/hwKlOVR041tngjerWxVccwjoin You can find the Playlist and Video for the below topics in the above links and in each youtube video description You can find the links to download the Java code 1. Basic and Advanced Java 2. Servlets and JDBC 3. Spring, and Spring boot, JMS, RabbitMQ, Kafka, Apache Maven, and Apache Gradle 4. RESTFul Web Services, SOAP Web Services, JSON and XML 5. SQL, MySQL, Oracle, and MongoDB 6. Java Design Patterns 7. Apache server, Tomcat, and Eclipse 8. Amazon AWS 9. System Design 10. Computer Tricks and Tips And More... Regards, Ram. N
@LIAM_VID Ай бұрын
but than you have to update every ancestor whenever you add an element to the bottom ? and if we talk about scale of a lot of children it will be extreme bloated no ?
@reshmajagtap1153 Ай бұрын
I have not used any service then its necessary to delete account or terminate the account? If yes then how?
@RamNJava Ай бұрын
Is It Necessary to Delete or Terminate the Account? Not Always: If you're confident that no resources have been used and you don't plan to use AWS, you can leave the account as is. AWS does not charge for an unused account. Delete or Terminate: If you prefer not to keep an unused account or want to prevent any accidental charges in the future, it’s better to close it.
@shankar7435 Ай бұрын
Thanks for this information.
@RamNJava Ай бұрын
Hi, Thanks 🙂 Playlist Link: kzbin.infoplaylists Java Blog - ramj2ee.blogspot.com/2015/05/all-java-ee-linkshtml.html Videos link: kzbin.infovideos Channel URL: youtube.com/@RamNJava Join Now for Exclusive Early Access - Special Offer!: kzbin.info/door/hwKlOVR041tngjerWxVccwjoin You can find the Playlist and Video for the below topics in the above links and in each youtube video description You can find the links to download the Java code 1. Basic and Advanced Java 2. Servlets and JDBC 3. Spring, and Spring boot, JMS, RabbitMQ, Kafka, Apache Maven, and Apache Gradle 4. RESTFul Web Services, SOAP Web Services, JSON and XML 5. SQL, MySQL, Oracle, and MongoDB 6. Java Design Patterns 7. Apache server, Tomcat, and Eclipse 8. Amazon AWS 9. System Design 10. Computer Tricks and Tips And More... Regards, Ram. N
@TravelingMarlins Ай бұрын
Thank you for your instructions! I LOVE that you put the steps in the description, plus your additional explanation at each step! That was VERY helpful!! I'm going to check out your other videos! Question for ya: Where is that button located after I've already uploaded my new video? I know I can copy / paste, but I was hoping there's that "magic" button somewhere that I can use. Thank you again & thank you for your help in advance! (gail)
@RamNJava Ай бұрын
This Reuse option is only available for Draft [Visibility] video
@rutikbodke4036 Ай бұрын
Excellent explanation
@RamNJava Ай бұрын
Glad it was helpful! Join Now for Exclusive Early Access - Special Offer!: kzbin.info/door/hwKlOVR041tngjerWxVccwjoin Hi, Thanks 🙂 Playlist Link: kzbin.infoplaylists Java Blog - ramj2ee.blogspot.com/2015/05/all-java-ee-linkshtml.html Videos link: kzbin.infovideos Channel URL: youtube.com/@RamNJava You can find the Playlist and Video for the below topics in the above links and in each youtube video description You can find the links to download the Java code 1. Basic and Advanced Java 2. Servlets and JDBC 3. Spring, and Spring boot, JMS, RabbitMQ, Kafka, Apache Maven, and Apache Gradle 4. RESTFul Web Services, SOAP Web Services, JSON and XML 5. SQL, MySQL, Oracle, and MongoDB 6. Java Design Patterns 7. Apache server, Tomcat, and Eclipse 8. Amazon AWS 9. System Design 10. Computer Tricks and Tips And More... Regards, Ram. N
@PotocnikKulesa Ай бұрын
great video! i really liked how you broke down the concepts of Java threads in such an engaging way. however, i can't help but wonder if using threads for every multitasking scenario is always the best approach. sometimes i feel like it adds unnecessary complexity when simple asynchronous methods could suffice. what do you think?
@RamNJava Ай бұрын
Glad you liked it!
@RomriellMilkowski Ай бұрын
great video, i really appreciate the depth you went into on Java threads! but honestly, i feel like the real-world applications might not be as straightforward as presented. multitasking in practice can often lead to more complexity than anticipated, especially with thread safety issues popping up. what do you all think?
@RamNJava Ай бұрын
Thanks for sharing!
@dhanunjai6665 Ай бұрын
this playlist very nice . colud u provide all vedio images in a pdf formate in git hub accounts or any other link formate
@RamNJava Ай бұрын
Check the video description of each video it has the link.
@RoudebushVredenburg Ай бұрын
great video! the explanations were really clear and helpful. however, i can't help but wonder if using threads is always the best approach for multitasking. sometimes, it seems like managing complexity might outweigh the performance benefits, especially for smaller applications. interested to hear what others think!
@RamNJava Ай бұрын
Great point!
@mvignshtablet 2 ай бұрын
Many thanks 👍
@RamNJava Ай бұрын
Thank you too! Join Now for Exclusive Early Access - Special Offer!: kzbin.info/door/hwKlOVR041tngjerWxVccwjoin
@RamNJava Ай бұрын
Hi, Thanks 🙂 Playlist Link: kzbin.infoplaylists Java Blog - ramj2ee.blogspot.com/2015/05/all-java-ee-linkshtml.html Videos link: kzbin.infovideos Channel URL: youtube.com/@RamNJava You can find the Playlist and Video for the below topics in the above links and in each youtube video description You can find the links to download the Java code 1. Basic and Advanced Java 2. Servlets and JDBC 3. Spring, and Spring boot, JMS, RabbitMQ, Kafka, Apache Maven, and Apache Gradle 4. RESTFul Web Services, SOAP Web Services, JSON and XML 5. SQL, MySQL, Oracle, and MongoDB 6. Java Design Patterns 7. Apache server, Tomcat, and Eclipse 8. Amazon AWS 9. System Design 10. Computer Tricks and Tips And More... Regards, Ram. N
@sycogaming3935 2 ай бұрын
after installing mongodb shell , i coun't find the mongosh file that file is not there what should i do
@RamNJava 2 ай бұрын
Verify Installation Path Check the default installation directory to ensure mongosh is present: Windows: C:\Program Files\MongoDB\mongosh\bin\ MacOS/Linux: /usr/local/bin or /usr/bin If the file isn’t there, the installation may not have completed correctly.
@Rahul-kz5fi 2 ай бұрын
👍
@RamNJava Ай бұрын
Join Now for Exclusive Early Access - Special Offer!: kzbin.info/door/hwKlOVR041tngjerWxVccwjoin
@26s.pratyush59 2 ай бұрын
you sir posted a great video , that helped me now 7 years later................Thanks
@RamNJava 2 ай бұрын
Glad it helped Join Now for Exclusive Early Access - Special Offer!: kzbin.info/door/hwKlOVR041tngjerWxVccwjoin
@playFootball100 2 ай бұрын
I usually use javac --version to check the current version.
@playFootball100 2 ай бұрын
Useful
@RamNJava 2 ай бұрын
Thanks
@turtlewolf8022 2 ай бұрын
Great video! Worked for me.
@RamNJava 2 ай бұрын
Glad it helped. Join Now for Exclusive Early Access - Special Offer!: kzbin.info/door/hwKlOVR041tngjerWxVccwjoin
@sirRustyiron 2 ай бұрын
came across this in 2024, surprised to see no comments. Amazing ez to understand tutorial sir
@RamNJava 2 ай бұрын
Thanks: Join Now for Exclusive Early Access - Special Offer!: kzbin.info/door/hwKlOVR041tngjerWxVccwjoin
@ganeshjaggineni4097 2 ай бұрын
NICE SUPER EXCELLENT MOTIVATED
@RamNJava Ай бұрын
Hi, Thanks 🙂 Playlist Link: kzbin.infoplaylists Java Blog - ramj2ee.blogspot.com/2015/05/all-java-ee-linkshtml.html Videos link: kzbin.infovideos Channel URL: youtube.com/@RamNJava You can find the Playlist and Video for the below topics in the above links and in each youtube video description You can find the links to download the Java code 1. Basic and Advanced Java 2. Servlets and JDBC 3. Spring, and Spring boot, JMS, RabbitMQ, Kafka, Apache Maven, and Apache Gradle 4. RESTFul Web Services, SOAP Web Services, JSON and XML 5. SQL, MySQL, Oracle, and MongoDB 6. Java Design Patterns 7. Apache server, Tomcat, and Eclipse 8. Amazon AWS 9. System Design 10. Computer Tricks and Tips And More... Regards, Ram. N
@ganeshjaggineni4097 2 ай бұрын
NICE SUPER EXCELLENT MOTIVATED
@RamNJava Ай бұрын
Thanks for the kind words!
@ganeshjaggineni4097 2 ай бұрын
NICE SUPER EXCELLENT MOTIVATED
@RamNJava 2 ай бұрын
Thanks a lot .. Join Now for Exclusive Early Access - Special Offer!: kzbin.info/door/hwKlOVR041tngjerWxVccwjoin
@ganeshjaggineni4097 2 ай бұрын
NICE SUPER EXCELLENT MOTIVATED
@RamNJava 2 ай бұрын
Thanks a lot
@omkarraut5045 2 ай бұрын
I'm struggling with one issue. I have deployed my spring boot project on the tomcat server, I'm able to access it in my local machine using "localhost:8080" but what if I want to access it from any other device/system? I will be very thankful for the help..
@Analystmind 2 ай бұрын
How to get Java install
@RamNJava 2 ай бұрын
Check - kzbin.info/aero/PLmCsXDGbJHdjv75D2fIDZfKD-6CfZ8RZ7 kzbin.info/www/bejne/d3nXq6aBoqtobtk Early access to new videos - kzbin.info/door/hwKlOVR041tngjerWxVccwjoin
@amanmeshram1821 2 ай бұрын
Today was my seminar and I performed well thank you brother keep it well
@RamNJava 2 ай бұрын
Always welcome. Early access to new videos - kzbin.info/door/hwKlOVR041tngjerWxVccwjoin
@MrPrakashshah 2 ай бұрын
Stream examples made easy. Thank you for debugging. well explained content.
@RamNJava 2 ай бұрын
Glad it was helpful!
@RamNJava 2 ай бұрын
Early access to new videos - kzbin.info/door/hwKlOVR041tngjerWxVccwjoin
@vanshthukral5477 3 ай бұрын
Thanks! Really helpful.
@RamNJava 3 ай бұрын
Glad it was helpful!
@Pauldieterbrandt 3 ай бұрын
Helped me so much, thank you.
@RamNJava 3 ай бұрын
Glad it helped!
@RamNJava 2 ай бұрын
Early access to new videos - kzbin.info/door/hwKlOVR041tngjerWxVccwjoin
@ilovedance_yt 3 ай бұрын
best idea 😜💡
@RamNJava 3 ай бұрын
Many many thanks