Java Programing laungage

Core Java Tutorial

Introduction of Core Java

How To Install JDk and Set of Path

Syntax of java Program

Difference between Java and C/C++

Advantage and Disadvantage of Java

What is Java

Why Java is not Pure Object Oriented Language

Java has Following Features/Characteristics

Limitation of Java Language and Java Internet

Common Misconception about Java

Simple Program of Java

Integrated Development Environment in java

Compile and Run Java Program

Applet and Comments in Java

Tokens in Java

Keywords in Java

Identifier and Variables in Java


Data Type in Java

Assignments and Initialization in Java

Operators in Java

Rule of Precedence in Java

Operator on Integer and Separators in Java Programming

Java Control Flow of Statements

If and If-else Selection Statement

Nested If-else and If-else-If Selection Statement

switch case and conditional operator Selection Statement

for and while Loop

do..while and for each Loop

break and labeled break statement

continue and labeled continue statement

return Statement and exit() Method

Escape Sequence for Special Characters and Unicode Code

Constants and Block or Scope

Statement in Java

Conversions between Numeric Types in Java

Import Statement in Java

User Input in Java using Scanner Class

User Input in Java using Console Class

Array in Java

One Dimensional Array

Two Dimensional Array

Two Dimensional Array Program

Command Line Argument in Java

String args Types in Java

Uneven/Jagged array in java

Math Class Function and Constant

Math Class all Function used in a program

Enumerated Types in Java

Object Oriented Programming v/s Procedural Programming

Object Oriented Programming Concepts in Java

Introduction to Class,Object and Method in Java

Class Declaration in Java

Class & Objects in java

Encapsulation in Java

Modifiers/Visibility for a Class or Interrface or member of a Class

Polymorphism in Java

Runtime polymorphism (dynamic binding or method overriding)

Conversions between Numeric Types in Java
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In java there are two type of conversions between numeric types:

  1. Widening primitive conversion and
  2. Narrowing Primitive conversion

These conversions are applying for integers

  1. Widening primitive Conversion:

  2. Widening conversion are very simple. There is no cast required and will never result in a runtime exception. precision may be lost when converting from integer to floating point types.

    bytetoshort, int, long, float, or double
    shorttoint, long, float, or double
    chartoint, long, float, or double
    inttolong, float, or double
    longtofloat or double

    Example :

    int i = 65;
    long l = i;
    class WideningConversion 
    	public static void main(String[] args)
    		int i = 123456789;
    		float f = i;

    Output :

  3. Narrowing Primitive Conversion:

  4. Cast required between types. Overflow and underflow may happen but a runtime exception will never happen. In case of narrowing conversion from long (64 bit) to int (32) bit we have 32 fewer bits in the destination number. The following integer type conversions are the narrowing ones.

    shorttobyte or char
    chartobyte or short
    inttobyte, short, or char
    longtobyte, short, char, or int
    floattobyte, short, char, int, or long
    doubletobyte, short, char, int, long, or float

    Example :

    long l = 656666L;
    int i = (int) l;
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