下面是一个使用deleteCharAt方法删除最后一个字符的示例代码: publicclassDeleteLastCharacterExample{publicstaticvoidmain(String[]args){Stringstr="Hello World!";StringBuilderstringBuilder=newStringBuilder(str);// 删除最后一个字符stringBuilder.deleteCharAt(stringBuilder.length()-1);System.out.println("删除最后一个...
Deletes the character at the specified index. shifts any remaining characters to the left. C# 复制 [Android.Runtime.Register("deleteCharAt", "(I)Ljava/lang/StringBuilder;", "")] public Java.Lang.StringBuilder DeleteCharAt (int index); Parameters index Int32 the index of the character to ...
.collect(StringBuilder::new, StringBuilder::appendCodePoint, StringBuilder::append) .toString(); } As we can see, we used thelimit(text.length()-1)method to tell the stream to ignore and delete the last character. Apache Commons Lang3 Library The Apache Commons Lang libraryprovides theStringUt...
StringBuilder sb=newStringBuilder("春眠不觉晓,处处闻啼鸟。");sb.replace(8,11,"蚊子咬");System.out.println(sb);// 输出结果为:春眠不觉晓,处处蚊子咬。 void delete(int start, int end) 根据索引删减某部分。 代码语言:javascript 复制 StringBuilder sb=newStringBuilder("爸爸的脸蛋有很多褶皱");sb...
StringBuilder public StringBuilder(int capacity) 构造一个不包含字符的字符串构建器以及 capacity参数指定的初始容量。 参数 capacity - 初始容量。 异常 NegativeArraySizeException - 如果 capacity参数小于 0。 StringBuilder public StringBuilder(String str) 构造一个初始化为指定字符串内容的字符串构建...
修剪Java StringBuilder主要是指在使用StringBuilder进行字符串拼接时,如何在不影响性能的前提下,删除或清除其中的一部分内容。 Java StringBuilder的常见操作包括: 删除指定位置的字符:deleteCharAt(int index) 删除指定范围内的字符:delete(int start, int end) ...
StringBuilder sb = new StringBuilder("abcdefg"); sb.append("ak"); //abcdefgak sb.insert(1,"et");//aetbcdefg sb.deleteCharAt(2);//abdefg sb.delete(2,4);//abefg sb.setLength(4);//abcd sb.setCharAt(0,'k');//kbcdefg sb.replace(0,2,"hhhh");//hhhhcdefg ...
* StringBuilder是线程不同步的,多线程不安全,通常用于单线程,JDK1.5以后出现,提高效率*//** 基本数据类型对象包装类 * 为了方便操作基本类型值,将其封装成了对象 * 用于描述该对象的类就称为基本数据类型对象包装类 * byte Byte * short Short * int Integer ...
public class StringBuilderRemoveEx { public static void main(String[] args) { var sentence = "There is a red fox in the forest."; var builder = new StringBuilder(sentence); builder.delete(11, 14); System.out.println(builder); builder.deleteCharAt(11); ...
java的StringBuilder与StringBuffer类源码详解 类的定义 abstract class AbstractStringBuilder implements Appendable, CharSequence { char[] value; int count; AbstractStringBuilder() { } AbstractStringBuilder(int capacity) { value = new char[capacity]; ...