String readUTF int readUnsignedShort void registerValidation(ObjectInputValidation obj, int prio) 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 int readUnsignedShort void registerValidation(ObjectInputValidation obj, int prio)