Added some java programs

[cryskram]

Added a few beginner java programs that i learned in my school and one CPP program

• Sum of elements in an array
• Hello world in java
• Bubble Sort in Java ( Algorithms)
• Largest Number
• OOP basics
• Positive or negative
• Function overloading
• Prime Number

These maybe simple but teach a lot about the programming language structure

[cryskram]

Please merge #132 if it is going well