As part of solution choose any of the following. Break method call and argument pass in two calls – Integer i = getInteger(); print(i); Or Call print method with Typed argument – print(Main.<Integer>getInteger()); I hope it will help. 10 solved Java 8 generic type conversion fails where as it was passing with java 7
You can try something with 2^N (N can takes as length ). Then convert 0-2^N to binary and use proper binary formating. The you can have what you looking for. First step- get 2^N double twosPow = Math.pow(2, occurrence); Now iterate from 0 up to twosPow. and convert number to binary Second step- how to … Read more
Step 1: Combine all the arrays Step 2: Sort arrays using Arrays.sort(array); Step 3: Remove the duplicates. int[] a = {1,2,3,4,5}; int[] b = {1,2,3,4,5,6}; int[] c = {1,3,7}; int[] d = {2,3,4,8,9,10}; int[] resultArray1 = new int[a.length+b.length+c.length+d.length]; int arrayIndex = 0; for (int i=0; i< a.length ; i++, arrayIndex++ ) { resultArray1[arrayIndex] = a[i]; … Read more
Throughout this post let’s assume numbers are one hex digit, just for simplicity. “>>” is the bit shift operator. For example: 8 >> 1 == 8 / 2 == 4; Which in binary is equivalent to b1000 >> 1 == b0100; Adding the third “>” into the operator inserts a 0 into the now far … Read more
How about this: String greetings = “Hello” + “,” + ” how are you”; Or this: String greetings = “Hello how are you”; greetings = greetings.substring(0, 5) + “,” + greetings.substring(5); Or this: String greetings = “Hello how are you”; greetings = new StringBuilder(greetings).insert(5, “,”).toString(); Inserting a punctuation mark is trivial if you know where … Read more
Your test annotations does not belongs to TestNG. Replace @Before with @BeforeTest @After with @AfterTest @Test should point TestNG library 1 solved Selenium TestNG – java.lang.NullPointerException
It looks like you do not want to print boolean array: it’s of little use. You need to print the primes from the Sieve of Eratosthenes, which can be done by enumerating the indexes, checking if primes[i] is true, and printing the index if it is. boolean primes = sieve(100); for (int i = 0 … Read more
Getters and Setters are useful, if you e.g want to add validation in the future (or add logging, or make access statistics or …) 1 solved Java – Global variables vs Global methods
Constructor name should be same as your class name. your class name is Rectangle1 thus your Constructor name should be the same as well, currently java compiler this it as an method without a return type, thus it complains. public Rectangle(double width, double height){ should be public Rectangle1(double width, double height){ 6 solved Invalid method … Read more
You can use the below regex to achieve your requirement: [ ](?=[^\)]*?(?:\(|$)) Explanation of the above regex: [ ] – Represents a space character. (?=[^\)]*?(?:\(|$)) – Represents a positive look-ahead asserting everything inside of (). (?:) – Represents a non-capturing group. | – Represents alternation. $ – Represents the end of the test String. You … Read more
Ok, first you should probably write your regex as: [\u0600-\u06FF\uFB8A\u067E\u0686\u06AF \.!?:)(,;1234567890%\-_#]+$ Here %\-_ inside […] means % or – or _ while your %-_ means “any symbol with the code from % to _. Try /[%-_]/.exec(“)”) and see what I mean: the ) symbol is in that range. I also put \. which highlights that … Read more
You need to load the com.mysql.jdbc.Driver driver class. private static final String DRIVER_NAME=”com.mysql.jdbc.Driver”; Look at the official documentation: The name of the class that implements java.sql.Driver in MySQL Connector/J is com.mysql.jdbc.Driver. The org.gjt.mm.mysql.Driver class name is also usable for backward compatibility with MM.MySQL, the predecessor of Connector/J. Use this class name when registering the driver, … Read more
You can modify your inner loop logic when printing lower half of the diamond. //Printing j *’s at the end of each row int mid = (row+1) / 2; for (int j = row; j > 0; j–) { if(i==0 && j==mid) System.out.print(“o “); else System.out.print(“* “); } 3 solved Printing Diamonds Java Output not … Read more
I gave a unsatisfying answer, thanks to @OlegEstekhin for pointing that out. As noone else answered yet, and a solution is not a two-liner, here it goes. Make a wrapping InputStream that throws away escape sequences. I have used a PushbackInputStream, where a partial sequence skipped, may still be pushed back for reading first. Here … Read more
First of all, and that’s supposed to solve the problem. If you use an ArrayList you should check its documentation. When you supposed to go through a simple array you use “nameOfArray.length”, right? Well, the ArrayList has the method “.size()” which bascialy has the same use. So your loop would be better this way : … Read more