java Archives - onlinetutorialspoint https://onlinetutorialspoint.com/category/java/ OnlineTutorialsPoint Thu, 01 May 2025 10:33:20 +0000 en hourly 1 https://wordpress.org/?v=6.8.2 https://onlinetutorialspoint.com/wp-content/uploads/2016/01/cropped-apple-icon-152x152-32x32.png java Archives - onlinetutorialspoint https://onlinetutorialspoint.com/category/java/ 32 32 Mastering Java’s String trim() Method: A Beginner’s Guide https://onlinetutorialspoint.com/java/sting-trim-method-in-java/ https://onlinetutorialspoint.com/java/sting-trim-method-in-java/#respond Thu, 01 May 2025 03:09:04 +0000 https://www.onlinetutorialspoint.com/?p=12291 Ever wondered how to clean up messy strings in Java? The trim() method is your go-to tool for removing unwanted whitespace from the start and end of a string. Whether it's spaces, tabs, or newlines, this method ensures your strings look neat and tidy. Let’s dive into how it works, explore practical examples, and uncover

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]]> https://onlinetutorialspoint.com/java/sting-trim-method-in-java/feed/ 0 Mastering Java’s String toLowerCase() Method: A Beginner’s Guide https://onlinetutorialspoint.com/java/string-tolowercase-method-in-java/ https://onlinetutorialspoint.com/java/string-tolowercase-method-in-java/#respond Mon, 29 Apr 2024 13:11:07 +0000 https://www.onlinetutorialspoint.com/?p=12264 Want to standardize your strings in Java? The toLowerCase() method is a simple yet powerful tool for converting all characters in a string to lowercase. Whether you're processing user input or formatting data, this method ensures consistency. Let’s explore how it works, dive into practical examples, and uncover tips to make the most of it!

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]]> https://onlinetutorialspoint.com/java/string-tolowercase-method-in-java/feed/ 0 Java – How to check whether a string is palindrome https://onlinetutorialspoint.com/java/how-to-check-whether-a-string-is-palindrome/ https://onlinetutorialspoint.com/java/how-to-check-whether-a-string-is-palindrome/#respond Sat, 30 Dec 2023 06:04:48 +0000 https://www.onlinetutorialspoint.com/?p=13464 In Java, verifying if a string is a palindrome involves examining its characters from both ends and confirming equality. The following Java program illustrates how to perform this palindrome check. Palindrome.java public class Palindrome { public static boolean isPalindrome(String str) { int left = 0; int right = str.length() - 1; while (left < right)

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]]> https://onlinetutorialspoint.com/java/how-to-check-whether-a-string-is-palindrome/feed/ 0 Top 20 Java Streams API interview questions https://onlinetutorialspoint.com/java/top-20-java-streams-api-interview-questions/ https://onlinetutorialspoint.com/java/top-20-java-streams-api-interview-questions/#respond Sun, 12 Feb 2023 07:16:43 +0000 https://www.onlinetutorialspoint.com/?p=13400 The Java Streams API is a powerful tool for processing large amounts of data in an efficient and scalable way. As a result, it is a popular topic in Java interviews, with many employers seeking to understand a candidate's knowledge and experience with the API. To prepare for a Java Streams API interview, it's important

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]]> https://onlinetutorialspoint.com/java/top-20-java-streams-api-interview-questions/feed/ 0 Integer.bitcount() method in Java https://onlinetutorialspoint.com/java/integer-bitcount-method-in-java/ https://onlinetutorialspoint.com/java/integer-bitcount-method-in-java/#respond Fri, 06 Jan 2023 04:46:47 +0000 https://www.onlinetutorialspoint.com/?p=13123 Integer.bitCount() method in Java In Java, the bitCount() method is a static method of the Integer wrapper class. It returns the total number of one bit in two's complement binary representation of the given integer value. However, if the value is a character, it will return the number of one bit in the binary equivalent

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]]> https://onlinetutorialspoint.com/java/integer-bitcount-method-in-java/feed/ 0 super keyword in Java Example https://onlinetutorialspoint.com/java/super-keyword-in-java-example/ https://onlinetutorialspoint.com/java/super-keyword-in-java-example/#respond Mon, 02 Jan 2023 16:27:51 +0000 https://www.onlinetutorialspoint.com/?p=13197 How to use super keyword in Java In Java, super is used to refer to the parent class constructor, variables or method. In other words, when we have a method in the derived class that overrides the method of the base class then we can use the super keyword to call the method of base

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]]> https://onlinetutorialspoint.com/java/super-keyword-in-java-example/feed/ 0 Java Hashmap entrySet() Example https://onlinetutorialspoint.com/java/java-hashmap-entryset-example/ https://onlinetutorialspoint.com/java/java-hashmap-entryset-example/#respond Sat, 11 Jun 2022 11:38:20 +0000 https://www.onlinetutorialspoint.com/?p=12858 The entrySet() in Hashmap is used to get the mapping of the hashmap in a set view. Method signature: The signature for entrySet() is shown below: public Set<Map.Entry<K,V>> entrySet() Methods parameters and return type: Parameter: It doesn't take any parameters. Return type: It returns a copy of a Hashmap. Throws: N/A. Hashmap entrySet() Example: In

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]]> https://onlinetutorialspoint.com/java/java-hashmap-entryset-example/feed/ 0 Java Hashmap keySet() Example https://onlinetutorialspoint.com/java/java-hashmap-keyset-example/ https://onlinetutorialspoint.com/java/java-hashmap-keyset-example/#respond Fri, 10 Jun 2022 11:31:23 +0000 https://www.onlinetutorialspoint.com/?p=12861 The keySet() in Hashmap is used to get a set of the keys present in a hashmap. Method signature: The signature for keySet() is shown below: public Set keySet() Methods parameters and return type: Parameter: It doesn't take any parameters. Return type: It returns a set of keys. Throws: N/A. Hashmap keySet() Example: In this

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]]> https://onlinetutorialspoint.com/java/java-hashmap-keyset-example/feed/ 0 Java Hashmap computeIfAbsent() Example https://onlinetutorialspoint.com/java/java-hashmap-computeifabsent-example/ https://onlinetutorialspoint.com/java/java-hashmap-computeifabsent-example/#respond Thu, 09 Jun 2022 06:13:56 +0000 https://www.onlinetutorialspoint.com/?p=12866 The computeIfAbsent() in Java computes a given value by using a provided operation function. Method signature: The signature for computeIfAbsent() is shown below: public V computeIfAbsent(K key, Function<? super K, ? extends V> Function) Methods parameters and return type: Parameter: It takes a key and a function as a parameter. We perform an operation given

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]]> https://onlinetutorialspoint.com/java/java-hashmap-computeifabsent-example/feed/ 0 Java String lastIndexOf() Example https://onlinetutorialspoint.com/java/java-string-lastindexof-example/ https://onlinetutorialspoint.com/java/java-string-lastindexof-example/#respond Sat, 21 May 2022 06:13:15 +0000 https://www.onlinetutorialspoint.com/?p=12207 If you want to know the last index position of a substring or a character in a string, then use the lastIndexOf() method in Java. It returns the index position, but if the substring or a character is not available in a string, the method will return -1. Method signature: The signature for a lastIndexOf()

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