使用Java创建大小为1024字节的测试文件
我正在尝试生成大小为1024的文件。代码如下所示
import java.security.*;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.BufferedWriter;
public class GenerateFile {
public static void main(String[] args) {
SecureRandom random = new SecureRandom();
byte[] array = new byte[1024];
random.nextBytes(array);
for(byte i = 0; i<array.length; i++) {
System.out.println(bytes[i]);
}
try {
File file = new File("testfile");
FileWriter out = new FileWriter(file);
out.write(bytes);
System.out.println("Done ..........");
out.close();
if (file.createNewFile()){
System.out.println("File is created!");
}
else {
System.out.println("File already exists.");
}
}
catch (IOException e) {
e.printStackTrace();
}
}
}
这就是我得到的错误。我不明白如何在这里使用字节数组。同样,我希望文件大小为1024字节
GenerateFile.java:20: error: no suitable method found for write(byte[])
out.write(bytes);
^
method Writer.write(int) is not applicable
(argument mismatch; byte[] cannot be converted to int)
method Writer.write(char[]) is not applicable
(argument mismatch; byte[] cannot be converted to char[])
method Writer.write(String) is not applicable
(argument mismatch; byte[] cannot be converted to String)
method OutputStreamWriter.write(int) is not applicable
(argument mismatch; byte[] cannot be converted to int)
谢谢
# 1 楼答案
编写器和读取器是为编写文本而设计的,而不是二进制文本。我建议您对二进制文件使用FileOutputStream
或者,假设每个字符都转换为一个字节,则可以使用以下命令