j.java

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// Java Document
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.InputStreamReader;
import java.util.Vector;

public class GetNetMACShell
{
private Process process = null;

public Vector execute(String shellCommand)
{
try
{
Start(shellCommand);
Vector vResult = new Vector();
DataInputStream in = new DataInputStream(process.getInputStream());
BufferedReader reader = new BufferedReader(new InputStreamReader(in));

String line;
do
{
line = reader.readLine();
if(line == null)
{
break;
}
else
{
vResult.addElement(line);
}
}
while(true);
reader.close();
return vResult;

}
catch(Exception e)
{
//error
return null;
}
}

public void Start(String shellCommand)
{
try
{
if(process != null)
{
kill();
}
Runtime sys = Runtime.getRuntime();
process = sys.exec(shellCommand);
}
catch(Exception e)
{
System.out.println(e.toString());
}
}

public void kill()
{
if(process != null)
{
process.destroy();
process = null;
}
}
}