java.io.StringWriter.append() 方法將指定的字符序列到這個writer。

聲明

以下是java.io.StringWriter.append()方法的聲明

public StringWriter append(CharSequence csq)

參數

• csq -- 字符序列追加。如果csq為null，則這四個字符“null”被附加到這個writer。

返回值

此方法返回這個writer。

異常

• NA

例子

下麵的示例演示java.io.StringWriter.append()方法的用法。

package com.yiibai;

import java.io.*;

public class StringWriterDemo {

   public static void main(String[] args) {

      // create a new writer
      StringWriter sw = new StringWriter();

      // create two new sequences
      CharSequence sq1 = "Hello";
      CharSequence sq2 = " World";

      // append sequence
      sw.append(sq1);

      // print result     
      System.out.println("" + sw.toString());

      // append second sequence
      sw.append(sq2);

      // print result again
      System.out.println("" + sw.toString());

   }
}

Let us compile and run the above program, this will produce the following result

Hello
Hello World