Convert hexadecimal number to decimal number

     
public class Main {

  public static void main(String[] args) {
    System.out.println(Integer.parseInt("20", 16));
  }
}

1.	Java int:int is 32 bit signed type ranges from –2,147,483,648 to 2,147,483,647.
2.	Integer class creates primitives that wrap themselves around data items of the int data type
3.	Rolling the Dice
4.	Are all hex integers negative
5.	Int Overflow
6.	Multiply a decimal fraction, not using floating point	$Multiply a decimal fraction, not using floating point$
7.	The Integer class cannot be changed
8.	Demonstrate a type wrapper.
9.	Autoboxing/unboxing int
10.	Getting a Valid Integer
11.	Convert string to integer
12.	Integer.toBinaryString
13.	Convert octal number to decimal number
14.	Convert binary number to decimal number
15.	Convert decimal integer to octal number
16.	Convert decimal integer to hexadecimal number
17.	Integer.toHexString
18.	Integer.MIN_VALUE
19.	Java Sort int Array
20.	Compare Two Java int Arrays
21.	Pass an integer by reference
22.	Modifiable Integer
23.	Given an integer, return a string that is in an approximate, but human readable format
24.	Returns the sign for int value x
25.	Gets the maximum of three int values.
26.	Gets the minimum of three int values.
27.	Add two integers, checking for overflow.

Convert hexadecimal number to decimal number : int « Data Type « Java