- Exercise Corrigo Java Pdf Tutorial For Beginners Tutorial
- Exercise Corrigo Java Pdf Tutorial For Beginners Beginners
If you have just started learning basics of Java programming language or familiarwith programming in either C or C++ then these Java programming questions and exercises foryou. It doesn't focus on particular part of Java but these coding exerciseswill switch you in programming mode.These are also great way to master basicprogramming construct like if-else , loops like for andwhile,break and continue with loop, Java operators e.g. arithmeticand logical operator, recursion, methods or functions and common Java API. You may alsofind these Java programming questions in most of Java courses taught in school,colleges and various Java training courses. Even I have started learning Javaby doing these exercises multiple times with different ways. They areinteresting, gives feeling of accomplishment if you complete it. These Java programslooks simple but they are still tricky for novice Java programmers. Try tosolve these coding exercises by yourself but if you stuck you can checkrelevant links or of-course use google to get more insight on them. You can alsosee here more Java programmingquestions and exercises.
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Java Programing Questions exercises for beginners topractices
Here is my list of 10 Java programming questions or Java programs which can help any beginner to getstarted in programming world. These are classics, popular and very effective.You can use either notepad or any Java IDE like Eclipse or Netbeans forcoding. See links for solution and hints.
1. Writea program in Java to check if a number is even or odd in Java? (input 2output true, input 3 : output false)
A number is called even if it is completely divisible by two and odd ifit’s not completely divisible by two. For example number 4 is even numberbecause when you do 4/2 , remainder is 0 which means 4 is completely divisibleby 2. On the other hand 5 is odd number because 5/2 will result in remainder as1. See here to find how to check even and odd number in Java.
2. Writea program in Java to find out if a number is prime in Java? (input 7:output true , input 9 : output false)
A number is called prime if it is divisible by either itself or 1. Thereare many algorithm to find prime numbers e.g. instead of dividing till number,division upto square root of number may be enough. Start from simplest one andthan try to solve this problem with couple of different ways. Here is one wayto check prime numbers in Java
3. Write Javaprogram to check if a number is palindrome in Java? ( 121 ispalindrome, 321 is not)
A number is called a palindrome if number is equal to reverse of numbere.g. 121 is palindrome because reverse of 121 is 121 itself. On the other hand321 is not palindrome because reverse of 321 is 123 which is not equal to 321.See here for solution ofchecking if a number is palindrome or notin Java.
4. How tofind if a number is power of 2 in Java? (1,2, 4 power of 2, 3 is not)
This is another interesting Java programming exercise. This program canbe solved using different ways e.g. using arithmetic operator or by using bitshift operator.
5. Writeprogram to sort an integer array without using API methods?
Sorting questions are one of the integral part of programming questions. There are many sorting algorithm out there to sort any array in Java e.g.Bubble sort, Insertion sort, Selection sort or quick sort. Implementing sortingalgorithm itself a good programming exercise in Java. By the way here is oneway to sort an integer array with Bubble sortalgorithm in Java.
6. WriteJava program to check if a number is Armstrong number or not? (input 153 output true,123 output false)
An Armstrong number of 3 digit is a number for which sum of cube of itsdigits are equal to number e.g. 371 is an Armstrong number because 3*3*3+ 7*7*7 + 1*1*1 = 371). See here for sample Java program to check if a number is Armstrong number ornot.
7. Writea program in Java to reverse any String without using StringBuffer?
This is another classical Java programming question. You can reverseString in various way in Java but two programming technique is used to do e.g.Iteration and Recursion. Try solving thisproblem using Iteration first by using Java’s arithmetic operator and thanlook to implement a recursive solution. Here is one way to reverse String in Java without usingStringBuffer.
8. Writea program in Java to print Fibonacci series up to given number? Write bothiterative and recursive version.
Fibonacci series a popular number series and very popular programming question in Java, in which number is equal to sumof previous two numbers, starting from third. Fibonacci series is also a goodrecursion exercise and often asked in Interviews as well. Try doing this exercise by using both Iteration e.g. loops and recursion. For help see How to print Fibonacci series in Javausing recursion.
9. Write aJava program to calculate factorial of an integer number ? Both iterative andrecursive solution.
Calculating Factorial is also a classic recursion exercise inprogramming. Since factorial is a recursive function, recursion becomes naturalchoice to solve this problem. You just need to remember formula for calculatingfactorial which is for n! its n*(n-1)*…1. here is one way to calculate Factorial in Java usingrecursion.
This program is a good exercise for mastering loops e.g. for loop andwhile loop in Java. This also teaches you How to use break and continue statementwith loops in Java. By the way you can print any character and use System.out.print() and System.out.println())
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These were some programming questions and exercises for beginners learning Javaprogramming language. This list is simple and you can solve these codingexercises in any programming language. I am sure Java beginners will find theseexercises interesting and useful. You can also post any coding exercise whichyou think can help junior programmers to learn programming and help convertinglogic to code.
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