可以使用Scanner类进行输入。 importjava.util.Scanner;// 导入 Scanner 类以接收输入publicclassSwapCharacters{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);// 创建 Scanner 对象System.out.print("请输入一个字符串: ");// 提示用户输入StringinputString=scanner.nextLine();// 读取...
import java.util.*; // Define a class named Main public class Main { // Method to swap the last two characters of a string public String lastTwo(String str) { // Check if the string has less than two characters, return the string as is if (str.length() < 2) return str; // ...
}publicString reverseWithSwaps(String string) {finalchar[] array =string.toCharArray();finalintlength = array.length - 1;finalinthalf = (int) Math.floor(array.length / 2);charc;for(inti = length; i >= half; i--) { c= array[length -i]; array[length- i] =array[i]; array[i]=...
public class ComputeResult { public static void main(String[] args) { String original = "software"; StringBuilder result = new StringBuilder("hi"); int index = original.indexOf('a'); /*1*/ result.setCharAt(0, original.charAt(0)); /*2*/ result.setCharAt(1, original.charAt(original.len...
Java Add Char to String usingStringBuffer.insert() TheStringBuffer.insert()method is part of thejava.lang.StringBufferclass in Java. It allows you to insert characters at any specified index within a string. By carefully selecting the index, you can effectively add a character to the end of...
Bug fixes and any other changes are listed below in date order, most current BPR first. Note that bug fixes in previous BPR are also included in the current BPR. To determine the version of your JDK software, use the following command: java -version Changes in Java SE 8u20 b32 Bug ...
util.Vector; public class Main { public static void main(String[] args) { Vector<Integer> vec = new Vector<>(); vec.add(10); vec.add(20); vec.add(30); vec.add(40); System.out.println("Before swap: " + vec); VectorSwap.swapElements(vec, 1, 3); System.out.println("After ...
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The cost of generating keys is recouped in faster comparisons when Strings need to be compared many times. On the other hand, the result of a comparison is often determined by the first couple of characters of each String. Collator.compare examines only as many characters as it needs which ...
Rupam YadavFeb 02, 2024JavaJava StringJava InputStream We will talk about how to convert a string to anInputStreamin Java using several methods. A string is a set of characters, while anInputStreamis a set of bytes. Let’s see how we can convert string toInputStreamin Java. ...