Added java explanatory code

[tanishagupta1]

Fixes #4

Short description of what this resolves:

Improves operators.md with java code and operators

What Changes proposed in this pull request:

• Added java code
• removed cpp code
• removed operators like comma, sizeof, reference and dereference which are not present in java

Checklist

• Added description of change
• Added file name matches File name guidelines
• Added code examples, test must pass
• Added documentation so that the program is self-explanatory and educational.
• Relevant documentation/comments is changed or added
• PR title follows semantic commit guidelines
• Search previous suggestions before making a new one, as yours may be a duplicate.
• I acknowledge that all my contributions will be made under the project's license.

Notes:

[Utkarsh1504]

Suggested change

	public class Main
	{
	public static void main(String[] args) {
	char ch = 'a';
	int typecasted_character = (int)'a';
	System.out.println(ch);
	System.out.println(typecasted_character);
	}
	}
	public class Main {
	public static void main(String[] args) {
	char ch = 'a';
	int typecasted_character = (int) 'a';
	System.out.println(ch);
	System.out.println(typecasted_character);
	}
	}

here also

[Utkarsh1504]

Suggested change

	public class Main
	{
	public static void main(String[] args) {
	int num=15;
	String msg = num > 10
	? "Number is greater than 10"
	: "Number is less than or equal to 10";
	System.out.println(msg);
	}
	```
	}
	public class Main {
	public static void main(String[] args) {
	int num = 15;
	String msg = num > 10 ? "Number is greater than 10" : "Number is less than or equal to 10";
	System.out.println(msg);
	}
	}

Please fix the indentation

[Utkarsh1504]

please fix the indentation, else everything is great.
👍🏻

[Utkarsh1504]

Looks good. Thank you 👍🏻