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Articles on Trending Technologies
Technical articles with clear explanations and examples
Find the 3rd smallest number in a Java array.
ExampleFollowing is the required program.public class Tester { public static int getThirdSmallest(int[] a) { int temp; //sort the array for (int i = 0; i < a.length; i++) { for (int j = i + 1; j < a.length; j++) { if (a[i] > a[j]) { temp = a[i]; a[i] = a[j]; a[j] = temp; } } } //return third smallest element return a[2]; } public static void main(String args[]) { int a[] = { 11,10,4, 15, 16, 13, 2 }; System.out.println("Third Smallest: " +getThirdSmallest(a)); } }OutputThird smallest: 10
Read MoreBootstrap 4 .justify-content-*-end class
To justify the flex items on the end, use the justify-content-end class.To justify the flex items on the end, on different screen sizes, use the justify-content-*-end class. The flex items justified at the end would be visible like the following on different screen sizes −Small Screen Size Alabama New York Texas Medium Screen Size Alabama New York Texas Let us see the complete code and learn how to work with justify-content-*-end class −Example Bootstrap Example US Alabama New York Texas Alabama New York Texas Alabama New York Texas
Read MoreStringTokenizer class in Java
The StringTokenizer class of the java.util package allows an application to break a string into tokens.This class is a legacy class that is retained for compatibility reasons although its use is discouraged in new code.Its methods do not distinguish among identifiers, numbers, and quoted strings.This class methods do not even recognize and skip comments.Exampleimport java.util.*; public class Sample { public static void main(String[] args) { // creating string tokenizer StringTokenizer st = new StringTokenizer("Come to learn"); // checking next token System.out.println("Next token is : " + st.nextToken()); } }OutputNext token is : Come
Read MoreJava String toCharArray() method example.
The toCharArray() method of a String class converts this string to a character array.Exampleimport java.lang.*; public class StringDemo { public static void main(String[] args) { // converts String value to character array type value String str = " Java was developed by James Gosling"; char retval[] = str.toCharArray(); // displays the converted value System.out.println("Converted value to character array = "); System.out.println(retval); } }OutputConverted value to character array = Java was developed by James Gosling
Read MoreHow is down-casting possible in Java?
Yes, a variable can be downcast to its lower range substitute by casting. It may lead to data loss although. See the example below −Examplepublic class Tester { public static void main(String[] args) { int a = 300; byte b = (byte)a; System.out.println(b); } }OutputIt will print output as −44
Read MoreHow to test String is null or empty?
We can verify whether the given string is empty using the isEmpty() method of the String class. This method returns true only if length() is 0.Exampleimport java.lang.*; public class StringDemo { public static void main(String[] args) { String str = "tutorialspoint"; // prints length of string System.out.println("length of string = " + str.length()); // checks if the string is empty or not System.out.println("is this string empty? = " + str.isEmpty()); } }Outputlength of string = 14 is this string empty? = false
Read MoreHow to Split a String with Escaped Delimiters?
The split(String regex) method of the String class splits this string around matches of the given regular expression.Examplepublic class Sample{ public static void main(String args[]){ String s = "|A|BB||CCC|||"; String[] words = s.split("\|"); for (String string : words) { System.out.println(string); } } }OutputA BB CCC
Read MoreBootstrap 4 .border-danger class
Use the border-danger class to set a red border to an element.Set the border-danger class to an element as if we include any other class − Red Border Above, we have also set another class “new”, to style the element − .new { width: 120px; height: 120px; margin: 20px; } You can try to run the following code to implement the border-danger class −Example Bootstrap Example .new { width: 120px; height: 120px; margin: 20px; } Rectangle with red border: Red Border
Read MoreConstructor overloading in Java
Yes! Java supports constructor overloading. In constructor loading, we create multiple constructors with the same name but with different parameters types or with different no of parameters.Examplepublic class Tester { private String message; public Tester(){ message = "Hello World!"; } public Tester(String message){ this.message = message; } public String getMessage(){ return message ; } public void setMessage(String message){ this.message = message; } public static void main(String[] args) { Tester tester = new Tester(); System.out.println(tester.getMessage()); Tester tester1 = new Tester("Welcome"); System.out.println(tester1.getMessage()); } } OutputHello World! Welcome
Read MoreJava string case change sample code examples.
You can change the cases using the toUpperCase() and toLowerCase() methods of the String class.Examplepublic class Sample { public static void main(String args[]){ String str = "Hello how are you"; String strUpper = str.toUpperCase(); System.out.println("Lower to upper : "+strUpper); String strLower = str.toLowerCase(); System.out.println("Upper to lower : "+strLower); } }OutputLower to upper : HELLO HOW ARE YOU Upper to lower : hello how are you
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