ObjectInputStream類readChar()方法
- readChar() 方法可在
java.io
包。 - readChar() 方法用於從此 ObjectInputStream 讀取 2 字節(即 16 位)字符。
- readChar() 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。
-
readChar() 方法可能會在讀取字符時拋出異常。
- IOException:在執行時遇到任何輸入/輸出錯誤時可能會拋出此異常。
- EOF異常: 到達文件末尾時可能會拋出此異常。
用法:
public char readChar();
參數:
- 它不接受任何參數。
返回值:
該方法的返回類型是char
,它返回讀取的兩個字節字符值。
例:
// Java program to demonstrate the example
// of char readChar() method of
// ObjectInputStream
import java.io.*;
public class ReadCharOfOIS {
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 writeChar() method is to write
// char to the obj_out_stm stream
obj_out_stm.writeChar('J');
obj_out_stm.writeChar('A');
obj_out_stm.writeChar('V');
obj_out_stm.writeChar('A');
obj_out_stm.flush();
while (obj_in_stm.available() > 0) {
// By using readChar() method is to read
// string characters one by one as a char
char val = (char) obj_in_stm.readChar();
System.out.println("obj_in_stm.readChar():" + 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.readChar():J obj_in_stm.readChar():A obj_in_stm.readChar():V obj_in_stm.readChar():A
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注:本文由純淨天空篩選整理自Preeti Jain大神的英文原創作品 Java ObjectInputStream readDouble() Method with Example。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。