more Java programs

[Satish8981]

Please assign me to add more problems code in Java

[jawadkhanpk]

@Sanchitbajaj02 Hey, I have a lot of basic java projects that I wanted to contribute, please assign this issue to me so that I can make a pull request Thanks.

[manav0702]

Please assign this to me.

[nilesh080802]

Please assign this to me.

[Adinath0]

Please assign me to add a pull request

[Sanchitbajaj02]

@Sanchitbajaj02 Hey, I have a lot of basic java projects that I wanted to contribute, please assign this issue to me so that I can make a pull request Thanks.

I am not the maintainer of this repo