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Legal Studies如何在 Java 中將檔案的內容寫入位元組陣列？
FileInputStream 類包含一個 read() 方法，此方法接受一個位元組陣列作為引數，並將檔案輸入流的資料讀入給定的位元組陣列中。
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);
}
}輸出
//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");
}
}
更新於： 19-Dec-2019
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