38 lines
1.1 KiB
Java
38 lines
1.1 KiB
Java
// onjava/OSExecute.java
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// (c)2020 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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// Run an operating system command
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// and send the output to the console
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package onjava;
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import java.io.*;
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public class OSExecute {
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public static void command(String command) {
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boolean err = false;
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try {
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Process process = new ProcessBuilder(
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command.split(" ")).start();
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try(
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BufferedReader results = new BufferedReader(
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new InputStreamReader(
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process.getInputStream()));
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BufferedReader errors = new BufferedReader(
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new InputStreamReader(
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process.getErrorStream()))
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) {
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results.lines()
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.forEach(System.out::println);
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err = errors.lines()
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.peek(System.err::println)
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.count() > 0;
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}
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} catch(IOException e) {
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throw new RuntimeException(e);
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}
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if(err)
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throw new OSExecuteException(
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"Errors executing " + command);
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}
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}
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