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Month: July 2012

strictfp Keyword in java

strictfp Keyword in java

In java  strictfp   is used to strict all the calculations of  to strictly follow the strict floating point calculations in all platforms.   It can be used with class , interfaces and non-abstract methods. If used with the method then it ensures all the calculations inside that method must follow floating point math. When used with the class then it ensures all calculations inside that class must follow floating point math. Compile-time constant expressions must always use strict floating-point behavior…

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JAVA Standard Edition 5.0

JAVA Standard Edition 5.0

JAVA 5.0 ( also known as Standard Edition 5.0 or J2SE 5 or J2SE 1.5) :-   Codename:- TIGER 1. Initially released in September 2004. 2. Has 3200+ classes and interfaces. 3. Introduced several updates and improvements Annotations:- Anotations wrere used to provide meta-data for the programs so that it can be easily understand for metadata-aware programs. Generics:-Generics are used to provide types of object belonging to collections. So that type safety cab be gauranteed at compile time. Autoboxing :- Autoboxing is…

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Jagged Array in Java

Jagged Array in Java

Java support Jagged Arrays. You can have a different¬†length for each column do not need to have same no of the column for all rows. Example:- public class JaggedArray { public static void main(String ar[]) { int[][] a=new int[2][]; a[0]=new int[2]; a[1]=new int[4]; a[0][0]=1; a[0][1]=12; a[1][0]=10; a[1][1]=3; a[1][2]=12; a[1][3]=13; System.out.println(“length-“+a.length); for (int i = 0; i < a.length; i++) { for (int k = 0; k < a[i].length; k++) { System.out.print(a[i][k]+” , “); } System.out.println(“”); } } } Output:- length-2…

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Varargs in java (Passing variable no of arguments in java method)

Varargs in java (Passing variable no of arguments in java method)

After J2SE 5.0 java supports passing of variable arguments in a method that u don’t need to fix the no of arguments at the time of defining the method. The compiler automatically converts the arguments in the form of an array so u can access all the arguments at runtime. Example:- public class Varargs { public static void main(String[] args) { Varargs var=new Varargs(); var.show(“Ankit” , “Singh” , “Katiyar”); var.show(“facebook.com””,”ankitkatiyar91″); } public void show(String… arg) { for(int i=0;i<arg.length;i++)¬† { System.out.println(arg[i]);…

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