Hollow Diamond in java

[Khushi-Sarawagi]

Pattern for Hollow Diamond in Java

Description:

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Fixes #issue_number_here

Type of change:

• [ x] New feature (non-breaking change which adds functionality)
• [x ] Change in documentation

Checklist:

• [x ] My code follows the style guidelines of this project.
• [ x] I have performed a self-review of my own code.
• [ x] I have commented my code, particularly in hard-to-understand areas.
• [ x] I have made corresponding changes to the documentation.
• [ x] My changes generate no new warnings.
• [ x] I have added tests that prove my fix is effective or that my feature works.
• [ x] New and existing unit tests pass locally with my changes.
• [ x] Any dependent changes have been merged and published in downstream modules.
• [ x] Necessary documentation changes done
• [ x] I have added the file in the correct directory

Screenshots / Video: