mirror of git://gcc.gnu.org/git/gcc.git
74 lines
1.5 KiB
Java
74 lines
1.5 KiB
Java
// Create a process and pipe data through it. waitFor() the process
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// in a different thread than the one that created it.
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import java.io.BufferedReader;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.io.PrintStream;
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public class Process_3 implements Runnable
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{
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Process p;
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public void run()
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{
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try
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{
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Runtime r = Runtime.getRuntime();
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String[] a = { "sed", "-e", "s/Hello/Goodbye/" };
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synchronized (this)
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{
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p = r.exec(a);
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this.notifyAll();
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}
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OutputStream os = p.getOutputStream();
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PrintStream ps = new PrintStream(os);
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ps.println("Hello World");
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ps.close();
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}
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catch (Exception ex)
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{
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System.out.println(ex.toString());
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System.exit(1);
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}
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}
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public static void main(String[] args)
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{
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try
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{
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Process_3 p3 = new Process_3();
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Thread t = new Thread(p3);
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t.start();
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synchronized (p3)
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{
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while (p3.p == null)
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p3.wait();
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}
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InputStream is = p3.p.getInputStream();
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InputStreamReader isr = new InputStreamReader(is);
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BufferedReader br = new BufferedReader(isr);
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String result = br.readLine();
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if (! "Goodbye World".equals(result))
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{
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System.out.println("bad 1");
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return;
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}
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result = br.readLine();
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if (result != null)
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{
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System.out.println("bad 2");
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return;
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}
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int c = p3.p.waitFor();
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System.out.println(c == 0 ? "ok" : "bad 3");
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}
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catch (Exception ex)
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{
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System.out.println(ex.toString());
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}
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}
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}
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