Java Java.io.CharArrayWriter.append() 方法

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  描述

  java.io.CharArrayWriter.append(CharSequence csq)方法将特定的字符序列附加到此编写器。
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  声明

  以下是java.io.CharArrayWriter.append(CharSequence csq)方法的声明-

   public CharArrayWriter append(CharSequence csq)

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  参数

  csq要附加的字符序列。如果字符序列为空，则在编写器后附加4个字符“空”。
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  返回值

  这个CharArrayWriter
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  异常

  不适用
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  例子

  以下示例显示java.io.CharArrayWriter.append（CharSequence csq）方法的用法。

   
  package com.jc2182;
  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 sequences
           CharSequence csq = "12345 ";
           CharSequence csq1 = "67890 ";
           CharSequence csq2 = "ABCDE ";
           CharSequence csq3 = "abcde ";
           
           // append character sequences to the writer
           chw.append(csq);
           chw.append(csq1);
           chw.append(csq2);
           chw.append(csq3);
           
           // prints out the character sequences
           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();
        }
     }
  }
  

  让我们编译并运行以上程序，这将产生以下结果-

   12345 67890 ABCDE abcde