Java Assignment Help
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Introduction to JAVA
Java is a high-level programming language. It is an object-oriented programming language, developed by James Gosling, Patrick Naughton, and other developers at Sun Microsystems. Program written in java run on every Operating System such as Windows, Mac OS, and the various versions of UNIX. without any modification. Java has its own virtual machine called Java Virtual machine (JVM). It is one of the most popular and secure programming languages. Nowadays based on the importance of web and mobile applications, Java is considered to be very useful for software enterprises. It is used widely and consistently in the speed of the development of software systems. especially if you are unaware of the know-hows of JAVA. We are here to help you out in these situations.
System Requirement
- Windows xp/7/8 or Linux operating system
- Java JDK
- Notepad or any other editor
Features of JAVA by JAVA Assignment Help Experts and Developer
Portable and Independent: Java has portability due to its compiler that generates bytecode that can be executed on any machine by interpreter JVM. Java is Independent that can be easily executed from one machine to another without modification of the program.
Robust and Secure: Java is a strong type of language which makes java Robust. In JAVA, Bugs, Errors are very rare. JAVA Compiler checks whether there is an error during compile-time or not and the Interpreter checks for runtime error that makes the software secure from the crash.
High Performance: Java performs program execution very impressive because of the bytecodes. Multithreading, Memory Consumption, Runtime of the program in java also plays a role in high performance. It is built to reduce overhead.
Ease of Development: Java is easy to use as the programming language. It helps programmers in reducing overhead by reusable code to the compiler and it is easy to handle bugs. It is easy to understand during the development.
Example of JAVA Assignment Help By Assignment Hippo Java Experts
{` An introductory "Hello World" program in JAVA looks like Your First Program class Main{ public static void main(String[] args) { System.out.println("Hello, World!"); } } `}
Advantage of JAVA Explained by JAVA Programming Assignment Help Experts
- Object-Oriented Concept: Java is the class-based programming language that follows object-oriented programming concepts. The object is an instance of a class, it can be functions, variables, or any data structures. It is easily reused in other programs. It makes our programs organized and Clear. For making decisions during the design of Software systems, A good understanding of OOPS concepts helps. OOPS consists of concepts like Inheritance, Abstraction, Encapsulation, and Polymorphism.
- Platform independent: Java is a Platform independent language which means compiled code of java (bytecode) runs on every operating system. The output of the compiler is a .class file (bytecode). This generated bytecode needs an interpreter to execute it on a machine. Java has JVM as an interpreter that executes the bytecode.
- Portable: Java has Portability due to Platform independence, Converting a java source code into its bytecode makes it easier to run on any environment. The only need is JVM installed on each platform.
- Secure: Java is the most secure programming language. We can build more secure software systems with java due to No explicit pointer. It has default safeguards using an access specifier that allows access to classes.
- Multithreaded: Java has a feature of Multithreading. Multithreading means concurrent execution of two or more blocks of a program. Each block of a program is known as a thread. So the thread is a lightweight process. Each and every thread has a priority, higher priority threads are executed first than a lower priority. This is basically used to maximize the utilization of the CPU to get maximum throughput. Java interpreter JVM allows threads for concurrent execution.
Disadvantage of JAVA while using JAVA Programming Assignment Help from Experts
Memory: Java runs on a JVM interpreter, So it consumes more memory than other programming languages. It also has no control for garbage collection that provides functions like free(), delete() to reduce memory overhead.
Cost: JAVA JVM allows the programs run to be platform-independent. JVM compiles the program once and runs it on a different machine. So it is costly due to JVM as it requires higher memory and hardware
Low-level programming: Java has no support of low-level programming such as pointer is missing. Instead of a pointer JAVA have references much closer to the pointer. References cannot be manipulated, but Pointer can.
Conclusion of Java Programming
JAVA like every language has its own set of merits and demerits. Despite this, you cannot disregard its prowess in areas of software development and object-oriented programming concepts. It provides the ease of syntax and control and also providing portability, compatibility, and support for legacy systems in the modern world.
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Java Assignment Help Sample Solved by Our JAVA Experts
{` 1. Create a word index of each file and store that index into an output file. If your input file is called a.txt then your output file must be called a_output.txt and your output will be stored in the output folder that was specified. You will create an output file for each input file. Your word index should be created in the following way: a. Read in all words. A word is any consecutive sequence of letters, numbers, apostrophes, special symbols, etc. The only things that delimit words are a space, tab and newline (i.e. whitespace). In my sample files, I am using the default delimiters specified by the Scanner class. If you use something different, you may get different results. You should store the words into one of the following Collections: TreeSet, HashSet, TreeMap or HashMap. If you don’t, your code will likely run very slow. All words are case insensitive. For example, the words cat , Cat , CAT and cAT are all considered the same word. Punctuation and other symbols are not to be filtered out. Therefore, cat: and cat are two separate words (note the colon after the first cat). b. Along with reading in all of the words, remember which “page” the word was on. We will start counting from page 1.c. For each file, after you have read in all of the words, you should write out your word index to that files output file. You should write out each word that appears in the file and for each word that you write out, you must also write what page(s) that word appears on. You must write out the words in alphabetical order and only put 1 word per line. Assume the word cat appears on pages 4, 10 and 16, your output should be formatted in the following fashion: cat 4, 10, 16 In other words, it is the word, followed by a space, followed by the page(s) that word appeared on where each page is separated by a comma (see sample input/output). Page numbers must appear in ascending order. Words that appear multiple times on the same page should not show up multiple times in the final output. For example, if the word cat appears on page 4 a total of 3 times, page 4 should only show up once in the output 2. You must solve this project in 3 different ways: a. (22 pts) The first way is without using threads. You must call your file that does not use threads Index.java You must time your code and determine how long it took to solve without using threads. Your program will create the appropriate files and then print out 1 thing to the terminal window: the amount of time it took to execute in milliseconds. b. (44 pts) Once you have your solution to 4a, modify it so that it uses threads in some fashion. The most natural way to use threads is to create a new thread for each file you read in. If you are testing this on a machine with multiple cores, you should notice a significant decrease in time (assuming you are using large enough files). You must call your file that uses threads IndexRunner.java . Note that this is not saying you are only allowed to create 1 file. Your main method must be in IndexRunner.java but you can create as many files as you want. Your program will create the appropriate files and then print out 1 thing to the terminal window: the amount of time it took to execute in milliseconds. Be sure to wait for your threads to finish before reporting a time. c. (44 pts) In short, you are creating a global word index. This differs from the previous question in that you need to send your results back to the master thread so that the master thread can produce the output. Only the master thread is allowed to produce any output for this part. You must name this master file GlobalRunner.java . You can create more than`}