publicclassStringUtils{publicstaticStringgetSubstringAfterCharacter(Stringstr,charcharacter){intcharacterIndex=str.indexOf(character);if(characterIndex==-1){returnnull;// 如果字符串中不存在特定字符,则返回null}StringafterCharacter=str.substring(characterIndex+1);returnafterCharacter;}publicstaticvoidmain(String...
import java.util.Arrays; public class AdvancedStringOperations { public static void main(String[] args) { String csvData = "name,email,age"; // 字符串拆分 String[] parts = csvData.split(","); // 替换字符串 String modifiedData = csvData.replace("email", "contact"); // 输出结果 Syst...
publicfinalclassStringimplementsjava.io.Serializable, Comparable<String>, CharSequence {/** The value is used for character storage. */privatefinalcharvalue[]; ... 从源码中可以看出,value[]是一个私有的字符数组,String类其实就是通过这个char数组来保存字符串内容的。简单的说,我们定义的字符串会被拆成...
* The {@code String} class representscharacter strings. All * stringliteralsin Java programs, such as {@code "abc"}, are * implemented as instances of this class. * * Strings areconstant; their valuescannot be changedafter they * are created. String buffers support mutable strings. * Bec...
toString(characterAtIdx6); // char to string System.out.println("Length: " + stringAtIdx6.length()); System.out.println("String: " + stringAtIdx6); } } Output: Length: 1 String: t Convert Char to String by Using the String.valueOf() Method After getting a char from a string,...
The value is used for character storage. Implementation Note: This field is trusted by the VM, and is a subject to constant folding if String instance is constant. Overwriting this field after construction will cause problems. Additionally, ...
StringCharacterIterator implements the CharacterIterator protocol for a String.C# 复制 [Android.Runtime.Register("java/text/StringCharacterIterator", DoNotGenerateAcw=true)] public sealed class StringCharacterIterator : Java.Lang.Object, IDisposable, Java.Interop.IJavaPeerable, Java.Text.ICharacterIterator...
String[] sentences = text.split("\\."); Since the split method accepts a regex we had to escape the period character. Now the result is an array of 2 sentences. We can use the first sentence (or iterate through the whole array): ...
⑧void setCharacterStream(int parameterIndex, java.io.Reader reader, int length) 将指定的输入流写入数据库的文本字段。 ⑨void setBinaryStream(int parameterIndex, java.io.InputStream x, int length) 将二进制的输入流数据写入到二进制字段中。
String) { String s = (String) obj; // grr... ... } // after if (obj ...