Java.io.CharArrayWriter.reset()方法實例

java.io.CharArrayWriter.reset() 方法重設緩衝區，以便它可以被重新使用，無需扔掉分配的緩衝區。

聲明

以下是java.io.CharArrayWriter.reset()方法的聲明：

public void reset()

參數

• NA

返回值

該方法不返回任何值。

異常

• NA

例子

下面的示例演示java.io.CharArrayWriter.reset()方法的用法。

package com.yiibai; import java.io.CharArrayWriter; public class CharArrayWriterDemo { public static void main(String[] args) { CharArrayWriter chw = null; try{ // create character array writer chw = new CharArrayWriter(); // declare character sequence CharSequence csq = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; // append character sequence to the writer chw.append(csq); System.out.println("Before Reset:"); // print character sequence System.out.println(csq); // invoke reset() chw.reset(); System.out.println("Reset is invoked"); csq = "1234567890"; chw.append(csq); System.out.println("After reset:"); // print character sequence System.out.println(chw.toString()); }catch(Exception e){ // for any error e.printStackTrace(); }finally{ // releases all system resources from writer if(chw!=null) chw.close(); } } }

讓我們來編譯和運行上面的程序，這將產生以下結果：

Before Reset: ABCDEFGHIJKLMNOPQRSTUVWXYZ Reset is invoked After reset: 1234567890