FileInputStream: 用于从文件中读取原始字节流。 BufferedInputStream: 为FileInputStream提供缓冲功能,提高读取性能。 read(): 用于读取单个字节或字节数组。 示例代码 接下来我们将通过一个简单的示例来展示如何在Java中读取二进制文件。假设我们有一个名为sample.bin的二进制文件,我们要读取
在上述代码中,首先创建了一个File对象,表示要读取的二进制文件。然后通过创建FileInputStream对象,并传入该文件对象,创建了一个文件输入流。接下来,使用一个字节数组作为缓冲区,通过调用read()方法从文件输入流中读取数据,并将读取的字节数保存到bytesRead变量中。如果read()方法返回-1,表示已经读取到文件末尾,循环结...
在解析二进制文件之前,我们首先需要打开文件。这可以通过使用Java的FileInputStream类来实现。下面是打开文件的代码示例: importjava.io.FileInputStream;importjava.io.IOException;publicclassBinaryFileParser{publicstaticvoidmain(String[]args){try{FileInputStreamfileInputStream=newFileInputStream("binary_file.bin")...
Write a Java program to read the entire contents of a file into a byte array using Java NIO. Write a Java program to convert a file to a byte array and then reconstruct the file from the array. Write a Java program to read a binary file into a byte array and display its hexadecimal...
InputStream;2importjava.io.DataOutputStream;3importjava.io.File;4importjava.io.FileInputStream;5importjava.io.FileOutputStream;6importjava.io.IOException;78/*@comany 阿斯达克(深圳)信息技术有限公司9* @author steven.wu10* @since 2009.8.1111* @description read and write stream for binary file。
The many ways to write data to File using Java. Read more→ 2. Setup 2.1. Input File In most examples throughout this article, we’ll read a text file with filenamefileTest.txtthat contains one line: Hello, world! For a few examples, we’ll use a different file; in these cases, ...
We can use DataInputStream to read binary or primitive data type from file. Let’s start with the actual file itself: 1 Hello The following test reads the file using a DataInputStream: 1 2 3 4 5 6 7 8 9 10 11 @Test public void whenReadWithDataInputStream_thenCorrect() throws ...
public class Student { static int a = test(); static int test(){ return a; } public static void main(String[] args) { System.out.println(Student.a); } } //输出:0 解析:定义和赋值是两个阶段,在定义时会使用默认值(上面讲的,类的成员变量会有默认值)定义出来之后,如果发现有赋值语句,再进...
Read a Binary from the specified DataInput. static Binary readBinary(DataInputStream in) Read a Binary from the specified DataInputStream. static Binary readBinary(File file) Read a Binary from the specified File. static Binary readBinary(FileChannel channel, long of, int cb, byte[] ab2)...
The Oracle Java Archive offers self-service download access to some of our historical Java releases WARNING:These older versions of the JRE and JDK are provided to help developers debug issues in older systems.They are not updated with the latest security patches and are not recommended for use...