Java program to calculate area of a circle

Java program to add two numbers

Java program to calculate area of rectangle

System arraycopy() method in java

Binary search in java

Java convert binary to decimal

Add two numbers without using arithmetic operators in java

Bubble sort in java

Calculate percentage in java

Convert char array to string in java

Continue statement in java

How to create directory in java

Java create new file

How to get current date time in java

Java convert date to string

Java program to convert decimal number to binary

Java convert decimal to hex

Java convert decimal to octal

Java program to delete specified integer from an array

Java program to find IP address

Java program to find even or odd

Armstrong number in java

Factorial program in java

Java program to print Floyd’s triangle

For loop in java

Garbage collection in java

Java convert hex to decimal

If else in java

Insertion sort java

How to get file last modified date in java

Java program to find if given year is leap year

Linear search in java

How to list all files in a directory in java

Java program to multiply two matrices

Java program to find transpose of a matrix

Merge sort java

Java convert octal to decimal

Java program to check if a number is palindrome or not

Java program to check whether string is palindrome

Java program to display pascal triangle

Java program to check whether number is prime or not

Java program to print alphabets

Java program to print multiplication table of any number

Quicksort java

Java program to delete vowels in a given string

Random number generator in java

How to rename file in java

Java reverse string array

Selection sort java

Java program to find simple interest

How to sort a string array in java

Sparse matrix and its representations in java

String toUpperCase() method in java

Java compare two strings

String concatenation in java

String length() method in java

Java remove character from string

Reverse a string in java

Java string trim() method

Java String toCharArray() method

Java program to swap two numbers

Switch statement in java

Java catch multiple exceptions and rethrow exception

Java overview

Major features of java

Preface to java virtual machine and architecture

Variables in java

Classes and objects in java

Polymorphism in java

Constructor in java

This keyword in java

Access modifiers in java

Inheritance in java

Abstraction in java

Nested classes in java

Strings in java

Methods in java

While loop in java

Static keyword in java

Interface in java

String literal in java

Comments in java

Arrays.sort() in java

Java program to find sum & average of an array

Create matrix with user input in java

For-each loop in java

Matrix addition and subtraction in java

Fibonacci series in java

Symmetric matrix program in java

Treemap in java

Arrays copyOfRange() in java

Treeset in java

HashSet in java

ArrayList in java

Sorting HashMap by values in java

Arrays in java

Java convert string to date

Java program to convert integer value into binary

Multidimensional array in java

Matrix multiplication in java using function

Java program to swap two numbers using function

Java program to swap two numbers using bitwise operator

Java program to find circumference of a circle

Java program to calculate area of circle using method

Java program to find perimeter of a rectangle

Calculate area of rectangle using class in java

Calculate area of rectangle using default constructor in java

Calculate area of rectangle using parameterised constructor in java

Calculate area of rectangle using constructor overloading in java

Find minimum and maximum values in a java array

Static method – java convert decimal to octal

Recursion – java program to convert decimal to octal

How to remove element from arraylist in java

Java program to print odd and even numbers in an array

Even odd program in java using ternary operator

Java bitwise AND to check a given number is odd or even

Java program to print armstrong number from 1 to 1000

Java program to check armstrong number

Java program find GCD and LCM of two numbers using euclid’s algorithm

Java program to remove vowels from a string using switch case

Java program to remove vowels from string using StringBuffer class

Java program to display prime numbers from 1 to 100

Java program to check if it is a sparse matrix

Difference between “==” operator and equals method in java

Java program to find largest in three numbers using ternary operator

Java program to find the largest in three numbers using nested if

Sort string array in case insensitive order and case sensitive order java

Java program to sort names in an alphabetical order

Java program to convert decimal to binary using toBinaryString and stack

Java program to convert decimal number to binary & count number of 1s

Java program to check whether string is palindrome using library methods

Java program to check palindrome string using recursion

Java program to add two numbers using method

String constructors in java

Do-while loop in java

JBoss exception Transaction is not active: javax.transaction.RollbackException: The transaction is not active!

(def current "Get current process PID" (memoize (fn [] (-> (java.lang.management.ManagementFactory/getRuntimeMXBean) (.getName) (string/split #"@") (first)))))

(defn- file? [f] (instance? java.io.File f)) (defn- find-files-in-dir [dir] (filter #(.isFile ^File %) (file-seq dir)))

(PushbackReader. (StringReader. s))

after the terminal operation of the stream pipeline commences.

Headers in a manifest Header Definition Name The name of the specification. Specification-Title The title of the specification. Specification-Version The version of the specification. Specification-Vendor The vendor of the specification. Implementation-Title The title of the implementation. Implementation-Version The build number of the implementation. Implementation-Vendor The vendor of the implementation.

To load classes in JAR files within a JAR file into the class path, you must write custom code to load those classes. For example, if MyJar.jar contains another JAR file called MyUtils.jar, you cannot use the Class-Path header in MyJar.jar's manifest to load classes in MyUtils.jar into the class path.

The Class-Path header points to classes or JAR files on the local network,

To modify the manifest, you must first prepare a text file containing the information you wish to add to the manifest. You then use the Jar tool's m option to add the information in your file to the manifest.

Warning: The text file from which you are creating the manifest must end with a new line or carriage return. The last line will not be parsed properly if it does not end with a new line or carriage return.

As an example, suppose you wanted to put audio files and gif images used by the TicTacToe demo into a JAR file, and that you wanted all the files to be on the top level, with no directory hierarchy. You could accomplish that by issuing this command from the parent directory of the images and audio directories: jar cf ImageAudio.jar -C images . -C audio .

Full disclosure: I’m a co-maintainer of clj-time and I’m pretty vocal about encouraging people not to use clj-time when starting a new project: use Java Time instead. Conversion from an existing, clj-time-heavy project is another matter tho’, unfortunately.

in general, clojure doesn't have java interop, it has jvm interop so in places where the java language doesn't map 1:1 to the jvm, clojure gives something that matches the raw jvm, not something that matches the java language

Perhaps part of the confusion - and you say this in a different way in your little memo - is that the C/C++ folks see OO as a liberation from a world that has nothing resembling a first-class functions, while Lisp folks see OO as a prison since it limits their use of functions/objects to the style of (9.). In that case, the only way OO can be defended is in the same manner as any other game or discipline -- by arguing that by giving something up (e.g. the freedom to throw eggs at your neighbor's house) you gain something that you want (assurance that your neighbor won't put you in jail).

Sum-of-product-of-function pattern - objects are (in effect) restricted to be functions that take as first argument a distinguished method key argument that is drawn from a finite set of simple names.

All you can do is send a message (AYCDISAM) = Actors model - there is no direct manipulation of objects, only communication with (or invocation of) them. The presence of fields in Java violates this.

Parametric polymorphism - functions and data structures that parameterize over arbitrary values (e.g. list of anything). ML and Lisp both have this. Java doesn't quite because of its non-Object types.

type-safe enum pattern

a mutator method is a method used to control changes to a variable. They are also widely known as setter methods

class MyClassDef {

    public void setProperty(String propertyVal) { .. }

}

Default Value

java convert string to date.

convert date to string java program

Date time java program

create file java program

create directory java program.

continue java example

char array to string java program.

java calculate percentage

bubble sort program in java

how to convert a binary number to decimal in java.

binary search program in java

Java system arraycopy example

find area of rectangle java program

Java program to add two numbers

java program calculate sum and average of array.

Two dimensional array java program

Addition Operation Using Bitwise Operators In Java

but the true technology of Java is not in the language, but the virtual machine itself. The JVM as it stands today, is a fast, abstract machine that you can plug any languages into, and is able to operate at speeds comparable to natively compiled binaries.

Other Java Tutorials and Learning Sites

Optimum buffer size is related to a number of things: file system block size, CPU cache size and cache latency. Most file systems are configured to use block sizes of 4096 or 8192. In theory, if you configure your buffer size so you are reading a few bytes more than the disk block, the operations with the file system can be extremely inefficient (i.e. if you configured your buffer to read 4100 bytes at a time, each read would require 2 block reads by the file system). If the blocks are already in cache, then you wind up paying the price of RAM -> L3/L2 cache latency. If you are unlucky and the blocks are not in cache yet, the you pay the price of the disk->RAM latency as well. This is why you see most buffers sized as a power of 2, and generally larger than (or equal to) the disk block size. This means that one of your stream reads could result in multiple disk block reads - but those reads will always use a full block - no wasted reads. Now, this is offset quite a bit in a typical streaming scenario because the block that is read from disk is going to still be in memory when you hit the next read (we are doing sequential reads here, after all) - so you wind up paying the RAM -> L3/L2 cache latency price on the next read, but not the disk->RAM latency. In terms of order of magnitude, disk->RAM latency is so slow that it pretty much swamps any other latency you might be dealing with. So, I suspect that if you ran a test with different cache sizes (haven't done this myself), you will probably find a big impact of cache size up to the size of the file system block. Above that, I suspect that things would level out pretty quickly. There are a ton of conditions and exceptions here - the complexities of the system are actually quite staggering (just getting a handle on L3 -> L2 cache transfers is mind bogglingly complex, and it changes with every CPU type). This leads to the 'real world' answer: If your app is like 99% out there, set the cache size to 8192 and move on (even better, choose encapsulation over performance and use BufferedInputStream to hide the details). If you are in the 1% of apps that are highly dependent on disk throughput, craft your implementation so you can swap out different disk interaction strategies, and provide the knobs and dials to allow your users to test and optimize (or come up with some self optimizing system).

array with component type int

required by Java

Think Java: How To Think Like a Computer Scientist

Java Programming Language was developed by James Gosling, Chris Warth, Patrick Naughton, Mike Sheridan and Ed Frank at Sun Microsystems, Inc in the year 1991. At first Java Programming Language was named as Oak, later that it was renamed to Java in the year 1995. Java Programming is a platform independent language. The Internet (World Wide Web) made Java programming more valuable. Since, Internet is connected to different types of systems which having different CPU's & environments, it must have the programs to run on any OS, CPU and Platform. Since, Java programming obtain platform independence and can able to run on any platform like Unix, Intel, Mac etc., it was widely used. Java language also protects two other major issues of Internet, they are security & portability.

blade is a web framework for rapid development of Java applications，you can be used to develop API, Web and back-end services and other applications, a RESTful framework, it provides a simple and convenient way of development, the whole operation of the micro kernel MVC bus guide frame, initial goal is to simplify the web development, and of course the author will upgrade in the future and integrate more compact components based on blade.

Compose complex, data-driven visualizations from reusable charts and components with d3.

booking.jsMake a beautiful embeddable booking widget in minutes.

MyInterfaceImpl

Up for a Challenge?

SqlResultSetMapping

2.3.2. Mapping native queries You can also map a native query (ie a plain SQL query). To achieve that, you need to describe the SQL resultset structure using @SqlResultSetMapping (or @SqlResultSetMappings if you plan to define several resulset mappings). Like @NamedQuery, a @SqlResultSetMapping can be defined at class level or in a JPA XML file. However its scope is global to the application.

@SqlResultSetMappings( { @SqlResultSetMapping(name = "ProfessorWithAddress", entities = { @EntityResult(entityClass = Professor.class), @EntityResult(entityClass = Address.class) }) })

Use @FieldResult in the SqlResultSetMapping, to link each entity property to its column alias

socialauth

Java Facebook Login with OAuth Authentication

Writing REST Services in Java: Part 6 Security & Authorization