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OSExecute.java
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37 lines (36 loc) · 1.06 KB
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// onjava/OSExecute.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// Run an operating system command
// and send the output to the console
package onjava;
import java.io.*;
public class OSExecute {
public static void command(String command) {
boolean err = false;
try {
Process process = new ProcessBuilder(
command.split(" ")).start();
try(
BufferedReader results = new BufferedReader(
new InputStreamReader(
process.getInputStream()));
BufferedReader errors = new BufferedReader(
new InputStreamReader(
process.getErrorStream()))
) {
results.lines()
.forEach(System.out::println);
err = errors.lines()
.peek(System.err::println)
.count() > 0;
}
} catch(IOException e) {
throw new RuntimeException(e);
}
if(err)
throw new OSExecuteException(
"Errors executing " + command);
}
}