Error in opening text file from src folder in Java
I am making a Java program and want to open a text(notepad)
file ,that i have saved in src
folder in my Java Program, I have tried to do it by the following code , but it is giving error. "The method exec(String)
in the type Runtime
is not applicable for the arguments
(InputStre开发者_开发知识库am)
, Any suggestions ? Thanks
Runtime runtime = Runtime.getRuntime();
InputStream lic = this.getClass().getClassLoader().getResourceAsStream("MyFile.txt");
Process process = runtime.exec(lic);
You can not execute an input-stream, it's just a collection of bytes, not a file.
You should store this file somewhere else inside your project (like a resources folder) and use the path to open the file. Here's how it would look like:
File file = new File("resources/my-file.txt");
String[] command = { "notepad.exe", file.getAbsolutePath() };
Runtime.getRuntime().exec( command );
None of the Runtime.exec
methods accept an InputStream
http://download.oracle.com/javase/6/docs/api/java/lang/Runtime.html
To read a file from an InputStream
, use a BufferedReader
BufferedReader reader = new BufferedReader(new InputStreamReader(lic));
String line = reader.readLine()
while(line != null){
System.out.println(line);
line = reader.readLine();
}
I think this is what you're trying to do:
ProcessBuilder pb = new ProcessBuilder("notepad", "/path/to/text-file");
Process process = pb.start();
See ProcessBuilder
Javadocs.
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