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  1. import java.lang.invoke.MethodHandles;
  2. import java.lang.invoke.MethodType;
  3.  
  4. class Test {
  5.     private static final byte[] CODE = convertToBytes(new short[]{
  6.             0xCA, 0xFE, 0xBA, 0xBE, 0x00, 0x00, 0x00, 0x34, 0x00, 0x11, 0x0A, 0x00,
  7.             0x04, 0x00, 0x0D, 0x08, 0x00, 0x0E, 0x07, 0x00, 0x0F, 0x07, 0x00, 0x10,
  8.             0x01, 0x00, 0x06, 0x3C, 0x69, 0x6E, 0x69, 0x74, 0x3E, 0x01, 0x00, 0x03,
  9.             0x28, 0x29, 0x56, 0x01, 0x00, 0x04, 0x43, 0x6F, 0x64, 0x65, 0x01, 0x00,
  10.             0x0F, 0x4C, 0x69, 0x6E, 0x65, 0x4E, 0x75, 0x6D, 0x62, 0x65, 0x72, 0x54,
  11.             0x61, 0x62, 0x6C, 0x65, 0x01, 0x00, 0x06, 0x74, 0x65, 0x6C, 0x6C, 0x4D,
  12.             0x65, 0x01, 0x00, 0x14, 0x28, 0x29, 0x4C, 0x6A, 0x61, 0x76, 0x61, 0x2F,
  13.             0x6C, 0x61, 0x6E, 0x67, 0x2F, 0x53, 0x74, 0x72, 0x69, 0x6E, 0x67, 0x3B,
  14.             0x01, 0x00, 0x0A, 0x53, 0x6F, 0x75, 0x72, 0x63, 0x65, 0x46, 0x69, 0x6C,
  15.             0x65, 0x01, 0x00, 0x07, 0x4C, 0x42, 0x2E, 0x6A, 0x61, 0x76, 0x61, 0x0C,
  16.             0x00, 0x05, 0x00, 0x06, 0x01, 0x00, 0x1B, 0x4A, 0x61, 0x76, 0x69, 0x73,
  17.             0x74, 0x69, 0x20, 0x74, 0x6F, 0x20, 0x70, 0x72, 0x6F, 0x73, 0x74, 0x65,
  18.             0x20, 0x6E, 0x65, 0x63, 0x68, 0x61, 0x70, 0x6F, 0x75, 0x21, 0x01, 0x00,
  19.             0x02, 0x4C, 0x42, 0x01, 0x00, 0x10, 0x6A, 0x61, 0x76, 0x61, 0x2F, 0x6C,
  20.             0x61, 0x6E, 0x67, 0x2F, 0x4F, 0x62, 0x6A, 0x65, 0x63, 0x74, 0x00, 0x21,
  21.             0x00, 0x03, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x01,
  22.             0x00, 0x05, 0x00, 0x06, 0x00, 0x01, 0x00, 0x07, 0x00, 0x00, 0x00, 0x1D,
  23.             0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x05, 0x2A, 0xB7, 0x00, 0x01,
  24.             0xB1, 0x00, 0x00, 0x00, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x06, 0x00,
  25.             0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x09, 0x00, 0x09, 0x00, 0x0A, 0x00,
  26.             0x01, 0x00, 0x07, 0x00, 0x00, 0x00, 0x1B, 0x00, 0x01, 0x00, 0x00, 0x00,
  27.             0x00, 0x00, 0x03, 0x12, 0x02, 0xB0, 0x00, 0x00, 0x00, 0x01, 0x00, 0x08,
  28.             0x00, 0x00, 0x00, 0x06, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x01,
  29.             0x00, 0x0B, 0x00, 0x00, 0x00, 0x02, 0x00, 0x0C
  30.     });
  31.  
  32.     public static void main(String[] args) throws Throwable {
  33.         Class<?> clazz = new ClassLoader() {{
  34.             defineClass(null, CODE, 0, CODE.length);
  35.         }}.loadClass("LB");
  36.  
  37.         System.out.println(MethodHandles.lookup()
  38.                 .findStatic(clazz, "tellMe", MethodType.methodType(String.class)).invoke());
  39.     }
  40.  
  41.     static byte[] convertToBytes(short[] values) {
  42.         byte[] result = new byte[values.length];
  43.  
  44.         for (int i = 0; i < values.length; i++) {
  45.             result[i] = (byte) values[i];
  46.         }
  47.  
  48.         return result;
  49.     }
  50. }
  51.  
Success #stdin #stdout 0.06s 4386816KB
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Javisti to proste nechapou!
https://ideone.com/CRMu5F
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
secret

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