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| import java.io.PrintWriter;
import java.util.Scanner;
public class TestIO {
static interface Test {
void test() throws Exception;
}
public static void main(String... args) throws Exception {
Test test1 = new Test() {
@Override
public void test() throws Exception {
String command = "echo bonjour";
Process process = Runtime.getRuntime().exec(command);
Scanner scanner = new Scanner(process.getInputStream());
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
System.out.println(line);
}
}
};
Test test2 = new Test() {
@Override
public void test() throws Exception {
String command = "for i in 'a b'; do echo $i; done";
Process process = Runtime.getRuntime().exec(command);
Scanner scanner = new Scanner(process.getInputStream());
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
System.out.println(line);
}
}
};
Test test3 = new Test() {
@Override
public void test() throws Exception {
String command = "sh -c \"for i in 'a b'; do echo $i; done\"";
Process process = Runtime.getRuntime().exec(command);
Scanner scanner = new Scanner(process.getInputStream());
while (scanner.hasNextLine()) {
String line = scanner.nextLine();
System.out.println(line);
}
}
};
Test test4 = new Test() {
@Override
public void test() throws Exception {
String command = "sh";
Process process = Runtime.getRuntime().exec(command);
PrintWriter writer = new PrintWriter(process.getOutputStream());
writer.println("for i in 'a b'; do echo $i; done");
Scanner scanner = new Scanner(process.getInputStream());
System.out.println("before hasNextLine()");
while (scanner.hasNextLine()) {
System.out.println("after hasNextLine()");
String line = scanner.nextLine();
System.out.println(line);
}
}
};
Test[] tests = { test1, test2, test3, test4 };
for (int i = 0; i < tests.length; i++) {
try {
System.out.println("==== DEBUT TEST " + i + " ====");
tests[i].test();
} catch (Exception e) {
System.err.println("test " + i + " failed");
e.printStackTrace();
} finally {
System.out.println("==== FIN TEST " + i + " ====");
Thread.sleep(1000);
}
}
}
} |
