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Legal Studies如何在 Java 中将文件的内容写入字节数组？
FileInputStream 类包含一个 read() 方法，此方法接受一个字节数组作为参数，并将文件输入流的数据读入给定的字节数组中。
示例
import java.io.File;
import java.io.FileInputStream;
public class FileToByteArray {
public static void main(String args[]) throws Exception {
File file = new File("HelloWorld");
FileInputStream fis = new FileInputStream(file);
byte[] bytesArray = new byte[(int)file.length()];
fis.read(bytesArray);
String s = new String(bytesArray);
System.out.println(s);
}
}输出
//Class declaration
public class SampleProgram {
/* This is my first java program.
This will print 'Hello World' as the output
*/
//Main method
public static void main(String []args) {
//prints Hello World
System.out.println("Hello World");
}
}
更新于： 19-Dec-2019
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