Java 中 StringWriter 的重要性是什么?
javaobject oriented programmingprogramming更新于 2025/6/10 0:12:17
StringWriter 类是 Writer 类的子类，它将字符串写入输出流。要写入字符串，此字符流将字符串收集到 字符串缓冲区 中，然后构造一个字符串。StringWriter 的缓冲区会根据数据自动增长。StringWriter 类的重要方法是 write()、append()、getBuffer()、flush() 和 close()。
语法
public class StringWriter extends Writer
示例
import java.io.*;
public class StringWriterTest {
public static void main(String args[]) {
String str = "Welcome to Tutorials Point";
try {
StringWriter sw = new StringWriter();
sw.write(str);
StringBuffer sb = new StringBuffer();
sb = sw.getBuffer();
System.out.println("StringBuffer: "+ sb);
System.out.println("String written by StringWriter: "+ sw);
sw.close();
} catch (IOException ioe) {
System.out.println(ioe);
}
}
}
输出
StringBuffer: Welcome to Tutorials Point String written by StringWriter: Welcome to Tutorials Point
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有用资源
java 参考教程 - 该教程包含有关 java 的更多信息:https://www.cainiaomax.com/java/
