importjava.util.Scanner;importnet.sourceforge.pinyin4j.PinyinHelper;publicclassMain{publicstaticvoidmain(String[]args){Scannerscanner=newScanner(System.in);System.out.print("请输入一个字符串:");Stringinput=scanner.nextLine();scanner.close();charfirstChar=input.charAt(0);booleanisLetter=Character.isLet...
As we can see, we only want the first character, ‘h‘, to be changed into ‘H‘. However,the remaining characters shouldn’t be modified. Of course, if the input string is empty, the result should be an empty string too: String EMPTY_INPUT = ""; String EMPTY_EXPECTED = ""; In ...
importnet.sourceforge.pinyin4j.PinyinHelper;publicclassPinyinUtil{publicstaticStringgetFirstLetter(Stringchinese){StringBuilderresult=newStringBuilder();for(charc:chinese.toCharArray()){String[]pinyinArray=PinyinHelper.toHanyuPinyinStringArray(c);if(pinyinArray!=null){result.append(pinyinArray[0].charAt(0)...
打开你在练习 0 中安装的文本编辑器,并将以下文本输入到一个名为FirstProg.java的单个文件中。确保与我写的完全匹配,包括间距、标点和大写。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 1publicclassFirstProg2{3publicstaticvoidmain(String[]args)4{5System.out.println("I am determined to learn h...
总结:封装类的ParseXxx;String类的valueOf,getBytes,toCharArray,getChars;String类的构造器是”万能“的。涉及到字符串与其他类型的转换时,考虑String和封装类的方法。 1.1.4 几个小算法 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // 1.模拟一个trim方法,去除字符串两端的空格。 public static String ...
public String(char value[], int offset, int count) { //起始值为0直接报异常 if (offset < 0) { throw new StringIndexOutOfBoundsException(offset); } //截取长度小于等于0时 if (count <= 0) { //如果count小于0直接报异常 if (count < 0) { ...
String filePath = "path/to/file"; try { uploadFile(targetUrl, filePath); } catch (IOException e) { e.printStackTrace(); } } } 流程图: 下面是使用mermaid语法的流程图,表示流式上传的流程 2. 多线程分批从磁盘读取# 批量读取文件: importorg.slf4j.Logger;importorg.slf4j.LoggerFactory;importja...
public String(char[] value, int offset, int count) Allocates a new String that contains characters from a subarray of the character array argument. The offset argument is the index of the first character of the subarray and the count argument specifies the length of the subarray. The con...
var letterSet = new TreeSet<>(letters); "a".equals(letters.getFirst()); "c".equals(letters.getLast()); There’s also a new method called reversed that returns a SequencedCollection that is a view on the underlying collection but in reverse order, which makes it super easy to iterate...
In addition, the string "fb" was removed from the bundle name (the file name of the installer). Bug Fixes Bug fixes are listed in the following table: Changes in 1.4.2_36 The full internal version number for this update release is 1.4.2_36-b03 (where "b" means "build"). The exte...