String readUTF

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描述

所述java.io.ObjectInputStream.readUTF()方法读取改性UTF-8格式的字符串。

声明

以下是java.io.ObjectInputStream.readUTF()方法的声明。

public String readUTF()

参数

NA

返回值

此方法返回String。

异常

UTFDataFormatException - 如果读取的字节不表示字符串的有效修改的UTF-8编码。

IOException - 如果从底层InputStream读取时存在I / O错误。

实例

以下示例显示了java.io.ObjectInputStream.readUnsignedShort()方法的用法。

package com.tutorialspoint;

import java.io.*;

public class ObjectInputStreamDemo {
   public static void main(String[] args) {
      String s = "Hello World!";

      try {
         // create a new file with an ObjectOutputStream
         FileOutputStream out = new FileOutputStream("test.txt");
         ObjectOutputStream oout = new ObjectOutputStream(out);

         // write something in the file
         oout.writeUTF(s);
         oout.writeUTF("This is an example");
         oout.flush();

         // create an ObjectInputStream for the file we created before
         ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt"));

         // read and print the string
         System.out.println("" + ois.readUTF());

         // read and print the string
         System.out.println("" + ois.readUTF());
      } catch (Exception ex) {
         ex.printStackTrace();
      }
   }
}

让我们编译并运行上面的程序,这将产生以下结果

Hello World!
This is an example