Java-Character String StringBuffer StringBuilder Java Character 类 Character 类用于对单个字符进行操作 character 类在对象包装一个基本类型char的值 charch ="a";charuniChar ='\u039A';char[] charArray = {'a','b','c'}; 使用Character的构造方法创建一个Character类对象 Characterch=newCharacter('a')...
Inserts the string representation of the Object argument into this character sequence. StringBuilder insert(int offset, String str) Inserts the string into this character sequence. int lastIndexOf(String str) Returns the index within this string of the rightmost occurrence of the specified substring...
Number类的成员方法 2.Character类 Character类提供了一系列方法来操纵字符。你可以使用Character的构造方法创建一个Character类对象,例如: Character ch =newCharacter('a'); 在某些情况下,Java编译器会自动创建一个Character对象。 例如,将一个char类型的参数传递给需要一个Character类型参数的方法时,那么编译器会自动...
Namespace: Java.Lang Assembly: Mono.Android.dll 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); ...
Java.Beans Java.Interop Java.Interop.Expressions Java.Interop.Tools.JavaCallableWrappers Java.IO Java.Lang Java.Lang AbstractMethodError AbstractStringBuilder ArithmeticException ArrayIndexOutOfBoundsException ArrayStoreException AssertionError Boolean BootstrapMethodError Byte Caractère Character.Subset Character.Unico...
* determine the number of {@code char}s to remove by calling * {@code Character.charCount(thisSequence.codePointAt(index))}, * where {@code thisSequence} is this sequence. * * @param index Index of {@code char} to remove * * @return This object. ...
* The value is used for character storage.*/ // 以字节形式存储字符序列 byte[] value; /** * The id of the encoding used to encode the bytes in {@code value}.*/ // 当前字符序列的编码:LATIN1或UTF16,由此可将ASB分为LATIN1-ASB或UTF16-ASB两类 ...
为了深入了解我们来看AbstractStringBuilder源码吧 importsun.misc.FloatingDecimal;importjava.util.Arrays;/** * 一个可变的字符序列。 * * 实现可修改的字符串。在任何时间点它都包含一些 * 特定的字符序列,但长度和内容 * 可以通过某些方法调用来更改序列。 * ...
* Returns the length (character count). * * @return the length of the sequence of characters currently * represented by this object */@Overridepublic intlength(){returncount;}/** * Returns the current capacity. The capacity is the amount of storage ...
如何修剪java stringbuilder? publicstaticStringtrimSubstring(StringBuildersb){intfirst,last;for(first=0;first<sb.length();first++)if(!Character.isWhitespace(sb.charAt(first)))break;for(last=sb.length();last>first;last--)if(!Character.isWhitespace(sb.charAt(last-1)))break;returnsb.substring(first...