Math class is present in java.lang package so no need to import, its there by default. Math class provides all trigonometric functions like ...

How to start new thread from main thread. Any program starts execution from main thread how ever you can start n numbers of threads from thi...

Simple program to scan input from user using Scanner class. You can get Long, Shot, Byte, String, Int etc. /* ScanInput.java */ import java....

As Hashtable is unordered and unsorted by default many time its required to sort it or randomly access its data. Same applicable with Linked...

Program to Iterate ArrayList, You can iterate ArrayList of String, Integer, Double, Long, Byte, Character etc. 1st Method simple standard wa...