InputStream 是从装置来源地读取数据的抽象表示,例如 System 中的标准输入流 in 对象就是一个 InputStream 类型的实例。 OutputStream 是所有表示位输出流的类之父类。子类要重新定义其中所定义的抽象方法,OutputStream 是用于将数据写入目的地的抽象表示。例如 System 中的标准输出流对象 out 其类型是java.io.Print...
public class SequenceInputStream extends InputStream 代码如下: try (FileInputStream fileInputStream1 = new FileInputStream("Input06.java"); FileInputStream fileInputStream2 = new FileInputStream("Input06.java"); SequenceInputStream sequence = new SequenceInputStream(fileInputStream1, fileInputStream...
static void setIn(InputStream in):重定向“标准”输入流; static void setOut(PrintStream out):重定向“标准”输出流; 实例: 将System.out的输出重定向到文件输出,而不是在屏幕输出; package org.westos.demo7; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.PrintS...
This abstract class is the superclass of all classes representing an input stream of bytes. Applications that need to define a subclass of InputStream must always provide a method that returns the next byte of input. Added in 1.0. Java documentation for java.io.InputStream....
class SequenceInputStream SequenceInputStream 表示其他输入流的逻辑串联。 class StringBufferInputStream 已过时。 此类未能正确地将字符转换为字节。从 JDK 1.1 开始,从字符串创建流的首选方法是通过 StringReader 类进行创建。声明为 InputStream 的java.io 中的字段 protected InputStream FilterInputStream.in ...
例程1FileIn.java importjava.io.*;publicclassFileIn{publicstaticvoidmain(Stringagrs[])throwsIOException{FileInputStreamin=newFileInputStream("D:\\mydir\\data.txt");intdata;while((data=in.read())!=-1)System.out.print(data+" ");in.close();}} ...
import java.io.*; import java.util.*; import cls.User; public class ObjectStreamDemo { public static void main(String[] args) { User[] user = new User[]{new User("dogg",1),new User("catt",2),new User("pigg",3)}; // 向文件中写入对象 ...
ByteArrayOutputStreamoutput=newByteArrayOutputStream();byte[] buffer =newbyte[4096];intn;while(-1!= (n = in.read(buffer))) {output.write(buffer,0, n); }returnoutput.toByteArray(); } 借助ByteArrayOutputStream,通过循环去读取流,直到读取完成,如果返回-1,表示全部读取完成。
Methods declared in class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait Constructor Details InputStream public InputStream() Constructor for subclasses to call. Method Details nullInputStream public static InputStream nullInputStream() Ret...
importjava.io.FileOutputStream;importjava.io.IOException;importjava.io.ObjectOutputStream;importjava.io.Serializable;publicclassPersonimplementsSerializable{// 实现序列化接口privateString id,name;privateint age;//构造方法publicPerson(String id,String name,int age){this.id=id;this.name=name;this.age=ag...