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Amazon Interview Question for Software Engineer / Developers


Country: United States
Interview Type: Phone Interview
More Questions from This Interview



Comment hidden because of low score. Click to expand.
2
of 2 vote

For Java Guys :

import javax.tools.JavaCompiler;
import javax.tools.ToolProvider;
public class CompileHello {
  public static void main(String[] args) {
  JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
  int result = compiler.run(null, null, null,"src/Hello.java");
  System.out.println("Compile result code = " + result);
  }
}

- Kiddo July 12, 2012 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 votes

Another one with error tracking etc (only for java)

public class MyClass {

  private static void printLines(String name, InputStream ins) throws Exception {
    String line = null;
    BufferedReader in = new BufferedReader(
        new InputStreamReader(ins));
    while ((line = in.readLine()) != null) {
        System.out.println(name + " " + line);
    }
  }

  private static void runProcess(String command) throws Exception {
    Process pro = Runtime.getRuntime().exec(command);
    printLines(command + " stdout:", pro.getInputStream());
    printLines(command + " stderr:", pro.getErrorStream());
    pro.waitFor();
    System.out.println(command + " exitValue() " + pro.exitValue());
  }

  public static void main(String[] args) {
    try {
      runProcess("javac Main.java");
      runProcess("java Main");
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}

- Kiddo July 12, 2012 | Flag
Comment hidden because of low score. Click to expand.
1
of 1 vote

write a bash script to do that and execute that bash script at runtime from your code.

- ethioer July 11, 2012 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 votes

You can use the system call for executing the commands at run.Yes you can also make the shell script and execute through system() call.

- Guest July 11, 2012 | Flag
Comment hidden because of low score. Click to expand.
1
of 1 vote

#include<stdio.h>
#include<syscall.h>
int main()
{
int i;
i = system("gcc test2.c");
i = system("./a.out");
return 0;
}

- Rohan Tare July 12, 2012 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 vote

Do it in a different process. Anyways using system calls will fork new processes

- Yoda July 11, 2012 | Flag Reply
Comment hidden because of low score. Click to expand.
-1
of 1 vote

use a C/C++ function pointer?

- pws August 02, 2012 | Flag Reply


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