Wait until notepad is terminated. : Runtime System « Development « Java Tutorial

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Java Tutorial » Development » Runtime System

6. 47. 4. Wait until notepad is terminated.


class ExecDemoFini {

  public static void main(String args[]) {

    Runtime r = Runtime.getRuntime();

    Process p = null;



    try {

      p = r.exec("notepad");

      p.waitFor();

    } catch (Exception e) {

      System.out.println("Error executing notepad.");

    }

    System.out.println("Notepad returned " + p.exitValue());

  }

}

6. 47. Runtime System
	6. 47. 1.	Milliseconds elapsed since January 1, 1970
	6. 47. 2.	Demonstrate totalMemory(), freeMemory() and gc().
	6. 47. 3.	Demonstrate exec().
	6. 47. 4.	Wait until notepad is terminated.
	6. 47. 5.	Timing program execution.
	6. 47. 6.	Using arraycopy().
	6. 47. 7.	Display the total amount of memory in the Java virtual machine.
	6. 47. 8.	Display the maximum amount of memory
	6. 47. 9.	Display the amount of free memory in the Java Virtual Machine.
	6. 47. 10.	Get Number of Available Processors
	6. 47. 11.	System.getProperty
	6. 47. 12.	Execute system command
	6. 47. 13.	Determine when the application is about to exit
	6. 47. 14.	Execute a command from code
	6. 47. 15.	Execute a command with more than one argument
	6. 47. 16.	Launch a Unix script with Java
	6. 47. 17.	Read output from a Command execution
	6. 47. 18.	Send an Input to a Command
	6. 47. 19.	From Runtime.exec() to ProcessBuilder
	6. 47. 20.	Registering Shutdown Hooks for Virtual Machine

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