Java ObjectInputStream readShort()用法及代碼示例

ObjectInputStream類readShort()方法

• readShort() 方法可在java.io包。
• readShort() 方法用於從此 ObjectInputStream 讀取 2 個字節的短值。
• readShort() 方法是一個非靜態方法，它隻能通過類對象訪問，如果我們嘗試使用類名訪問方法，那麽我們將得到一個錯誤。
• readShort() 方法可能在讀短時拋出異常。
  IOException:在執行時遇到任何輸入/輸出錯誤時可能會拋出此異常。

用法:

    public short readShort();

參數：

• 它不接受任何參數。

返回值：

該方法的返回類型是short，它返回 2 個字節(即 16 位)短讀。

例：

// Java program to demonstrate the example 
// of short readShort() method of ObjectInputStream

import java.io.*;

public class ReadShortOfOIS {
 public static void main(String[] args) throws Exception {
  // Instantiates ObjectOutputStream , ObjectInputStream 
  // FileInputStream and FileOutputStream
  FileOutputStream file_out_stm = new FileOutputStream("D:\\includehelp.txt");
  ObjectOutputStream obj_out_stm = new ObjectOutputStream(file_out_stm);
  FileInputStream file_in_stm = new FileInputStream("D:\\includehelp.txt");
  ObjectInputStream obj_in_stm = new ObjectInputStream(file_in_stm);

  // By using writeShort() method is to write
  // short to the obj_out_stm stream
  obj_out_stm.writeShort(124);
  obj_out_stm.writeShort(131);
  obj_out_stm.writeShort(182);
  obj_out_stm.writeShort(154);

  obj_out_stm.flush();

  while (obj_in_stm.available() > 0) {
   // By using readShort() method is to read
   // short from the obj_in_stm
   short val = (short) obj_in_stm.readShort();
   System.out.println("obj_in_stm.readShort():" + val);
  }

  // By using close() method is to 
  // close all the streams 
  file_in_stm.close();
  file_out_stm.close();
  obj_in_stm.close();
  obj_out_stm.close();
 }
}

輸出

obj_in_stm.readShort():124
obj_in_stm.readShort():131
obj_in_stm.readShort():182
obj_in_stm.readShort():154