StringWriter类是Writer类的子类，它将字符串写入输出流。为了写入字符串，该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的缓冲区根据数据自动增长。 StringWriter类的重要方法有write()、append()、getBuffer()、flush()和close()。 p>
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
