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Java EE

Java Enterprise Edition (Java EE) is a specification defining a collection of Java-based server and client technologies and how they interoperate. ...

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Software Developer

A person who never made a mistake never tried anything new.
- Albert Einstein

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Troubleshooting Solution

git clone and remote not working

bygp
12

I performed git clone as below from my windows laptop git bash


$ git clone

Troubleshooting Solution

abstract factory issues

bygp
3

I am trying abstract factory example. I am getting errors in ShapeFactory class has errors like

Troubleshooting Solution

interface override error

bygp
4

I have interface and implementation class as below

If I do not comment Override with

Troubleshooting Solution

enum for singleton using reflection

bygp
2

I have singleton class example as below.


When I execute i get two hash code for 2 separate instances

Troubleshooting Solution

github source code download

bygp
2

git hub I have java project. How to download that source code on to my windows laptop.  I like to

Troubleshooting Solution

not able to see code completion, code suggestion options in STS

bygp
1

I am in STS(spring tool suite). I did attached options. But I am not able to see code completion,

Troubleshooting Solution

resttemplate of spring boot not working

bygp
3

I have producer 11 spring boot application as below . Rest template not working from consumer

Troubleshooting Solution

onetomany and manytoone  parent and child table crud operation spring boot micro service

bygp
1

I have onetomany and manytoone  parent and child table crud operation spring boot micro service as

Troubleshooting Solution

';' expected line:2 error

bygp
2

I wrote below code


I am getting below error




I wrote as below got same error


It worked as below  without

Troubleshooting Solution

sts location in local C drive and document folder

bygp
1

I have multiple versions of spring tool suite STS in my C drive documents folder

Troubleshooting Solution

sample programs, simple explanation of java 8 and beyond till java 21

bygp
2

Looking for sample programs, simple explanation of java 8 and beyond till java 21 new features to

Troubleshooting Solution

Double vs double and Integer vs int in entity class

bygp
5

My Product Entity class as below


Instead of below

   @Id
   @GeneratedValue(strategy =

Troubleshooting Solution

indexoutofbound error

bygp
3

If I pass abc to below sampleMethod I am getting below error. Please advise



Troubleshooting Solution

not a statement issue

bygp
5


Troubleshooting Solution

not a statement  error

bygp
3

Please advise


Troubleshooting Solution

= in front or back of < or >

bygp
5

Why below code gives below error


  

  

}

Below compiles fine though

= should be used in front of < or

Troubleshooting Solution

put update rest service issues

bygp
1

I created PUT(update), delete rest example as below. When I run from postman getting below kind of

Troubleshooting Solution

java coding challenge sample questions

bygp
2

I was asked below type of questions. Where I can find more below type of code challenges?


Please

Troubleshooting Solution

testing rest product post from postman getting NPE

bygp
1






while testing rest product post from postman getting attached error. code as below.


please advise


Troubleshooting Solution

The method map(Function<? super Product,? extends U>) in the type Optional<Product> is not applicable for the arguments ((<no type> p) -> {}) Error

bygp
1

While doing update as below getting below error.


Please advise

The method map(Function<? super

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