|
1 package extensions;
2
3
56
57 import java.util.Date  ;
58 import java.lang.reflect.Method ;
59
60 public class TWrap {
61 static long start = 0;
62 public static void mark(String msg) {
63 long elapsed = new Date ().getTime() - start;
64 System.out.println(msg + " (" + elapsed + "ms)");
65 }
66 public static void main(String [] args) throws Exception {
67 Runtime.getRuntime().addShutdownHook(new MyShutdown());
68 int numArgs = args.length;
69 String clazz = args[0];
70 String [] newArgs = new String [numArgs - 1];
71 System.arraycopy(args, 1, newArgs, 0, numArgs - 1);
72 Class target = Class.forName(clazz);
73 if (target == null)
74 throw new Exception ("Couldn't load class");
75 Method mmeth = target.getMethod("main", new Class [] { String [].class });
76 Object obj = target.newInstance();
77 if (mmeth == null)
78 throw new Exception ("Couldn't find main()");
79 start = new Date ().getTime();
80 try {
81 mmeth.invoke(obj, new Object [] { newArgs });
82 } finally {
83 }
84 }
85
86 static class MyShutdown extends Thread {
87 public void run() {
88 System.err.println("hey");
89 System.err.flush();
90 long elapsed = new Date ().getTime() - start;
91 System.out.println("Elapsed time : " + elapsed + "ms");
92 }
93 }
94 }
95 |
Popular Tags |
Java API By Example, From Geeks To Geeks.