java string

class Test { public static void main(String[] args) { long startTime = System.currentTimeMillis(); StringBuffer stringBuffer = new StringBuffer(“Java”); for (int i = 0; i < 8000000; i++) { stringBuffer.append(“Programming”); } System.out.println(“Time taken by StringBuffer: ” + (System.currentTimeMillis() – startTime) + “ms”); startTime = System.currentTimeMillis(); StringBuilder stringBuilder = new StringBuilder(“Java”); for (int i = 0; i…

// creates an empty string buffer with the initial capacity of 16. StringBuffer str = new StringBuffer(); // creates a string buffer with the specified string. StringBuffer str = new StringBuffer(“some string value”); // creates an empty string buffer with the specified capacity as length. StringBuffer str = new StringBuffer(10); class Test { public static…

Up to this point, we’ve discovered that a String object is immutable, which implies that its contents cannot be altered once it is created. When we perform operations on a String, a new String object is generated. In order to modify the contents of a String, we can use the StringBuilder class provided by the…

class Test { public static void main(String[] args) { String str = “ALEGRUTECHBLOG”; String strInLowerCase = str.toLowerCase(); System.out.println(strInLowerCase); } } Output: alegrutechblog   toUpperCase() Converts all of the characters in this String to the upper case using the rules of the default locale.   class Test { public static void main(String[] args) { String str…

class Test { public static void main(String[] args) { String str = “alegru”; char c = str.charAt(2); System.out.println(c); } } Output: e class Test { public static void main(String[] args) { String str = “alegru”; int index = str.indexOf(‘l’); System.out.println(index); } } Output: 1 class Test { public static void main(String[] args) { String str…

Java Strings are one of the most commonly used data types in Java programming, and understanding how to work with them effectively is essential for any Java developer. In this tutorial, I will cover everything you need to know about Java Strings, from the basics of creating and manipulating Strings to advanced concepts like regular…