assertEquals(4, JvmUtil.getJavaVersion());
        System.setProperty("java.version", "1.5.0_15");
        assertEquals(5, JvmUtil.getJavaVersion());
        System.setProperty("java.version", "1.6.0_34");
        assertEquals(6, JvmUtil.getJavaVersion());
        System.setProperty("java.version", "1.7.0_25");
        assertEquals(7, JvmUtil.getJavaVersion());
        System.setProperty("java.version", "1.8.0_171");

        }
    }

    // Test edge cases to understand the validation behavior
    public void test_edgeCaseBehavior() {
        String[] edgeCases = { "0 0 25 * * ?", // Invalid day of month
                "0 60 * * * ?", // Invalid minute
                "0 0 0 32 1 ?", // Invalid day
                "0 0 0 1 13 ?", // Invalid month
        };

    checkFromStringCase("google.com:+25", 1, null, 99, false);
    checkFromStringCase("google.com:25  ", 1, null, 99, false);
    checkFromStringCase("google.com:25\t", 1, null, 99, false);
    checkFromStringCase("google.com:0x25 ", 1, null, 99, false);
  }

  public void testFromStringUnparseableNonsense() {
    // Some nonsense that causes parse failures.
    checkFromStringCase("[goo.gl]", 1, null, 99, false);

    checkFromStringCase("google.com:+25", 1, null, 99, false);
    checkFromStringCase("google.com:25  ", 1, null, 99, false);
    checkFromStringCase("google.com:25\t", 1, null, 99, false);
    checkFromStringCase("google.com:0x25 ", 1, null, 99, false);
  }

  public void testFromStringUnparseableNonsense() {
    // Some nonsense that causes parse failures.
    checkFromStringCase("[goo.gl]", 1, null, 99, false);

w:1;max-width:100%}.row-cols-1>*{-ms-flex:0 0 100%;flex:0 0 100%;max-width:100%}.row-cols-2>*{-ms-flex:0 0 50%;flex:0 0 50%;max-width:50%}.row-cols-3>*{-ms-flex:0 0 33.333333%;flex:0 0 33.333333%;max-width:33.333333%}.row-cols-4>*{-ms-flex:0 0 25%;flex:0 0 25%;max-width:25%}.row-cols-5>*{-ms-flex:0 0 20%;flex:0 0 20%;max-width:20%}.row-cols-6>*{-ms-flex:0 0 16.666667%;flex:0 0 16.666667%;max-width:16.666667%}.col-auto{-ms-flex:0 0 auto;flex:0 0 auto;width:auto;max-width:100%}.col-1{-ms-flex:0 0 8.333333%;flex:0...

      0x73,
      0xfd,
      0x1ffb,
      0x7fff0,
      0x1ffc,
      0x3ffc,
      0x22,
      0x7ffd,
      0x3,
      0x23,
      0x4,
      0x24,
      0x5,
      0x25,
      0x26,
      0x27,
      0x6,
      0x74,
      0x75,
      0x28,
      0x29,
      0x2a,
      0x7,
      0x2b,
      0x76,
      0x2c,
      0x8,
      0x9,

  response.body().source().readByteString();
}
```

And the listener prints the corresponding events:

```
REQUEST 1 (new connection)
0.000 callStart
0.010 dnsStart
0.017 dnsEnd
0.025 connectStart
0.117 secureConnectStart
0.586 secureConnectEnd
0.586 connectEnd
0.587 connectionAcquired
0.588 requestHeadersStart
0.590 requestHeadersEnd
0.591 responseHeadersStart
0.675 responseHeadersEnd

      case HALF_DOWN:
      case HALF_UP:
      case HALF_EVEN:
        BigInteger halfSquare = sqrtFloor.pow(2).add(sqrtFloor);
        /*
         * We wish to test whether or not x <= (sqrtFloor + 0.5)^2 = halfSquare + 0.25. Since both x
         * and halfSquare are integers, this is equivalent to testing whether or not x <=
         * halfSquare.
         */

-light-text-emphasis)!important}.text-dark-emphasis{color:var(--bs-dark-text-emphasis)!important}.link-opacity-10{--bs-link-opacity:0.1}.link-opacity-10-hover:hover{--bs-link-opacity:0.1}.link-opacity-25{--bs-link-opacity:0.25}.link-opacity-25-hover:hover{--bs-link-opacity:0.25}.link-opacity-50{--bs-link-opacity:0.5}.link-opacity-50-hover:hover{--bs-link-opacity:0.5}.link-opacity-75{--bs-link-opacity:0.75}.link-opacity-75-hover:hover{--bs-link-opacity:0.75}.link-opacity-100{--bs-link-opacity:1}....

max-width: 100%;\n}\n\n.row-cols-2 > * {\n  -ms-flex: 0 0 50%;\n  flex: 0 0 50%;\n  max-width: 50%;\n}\n\n.row-cols-3 > * {\n  -ms-flex: 0 0 33.333333%;\n  flex: 0 0 33.333333%;\n  max-width: 33.333333%;\n}\n\n.row-cols-4 > * {\n  -ms-flex: 0 0 25%;\n  flex: 0 0 25%;\n  max-width: 25%;\n}\n\n.row-cols-5 > * {\n  -ms-flex: 0 0 20%;\n  flex: 0 0 20%;\n  max-width: 20%;\n}\n\n.row-cols-6 > * {\n  -ms-flex: 0 0 16.666667%;\n  flex: 0 0 16.666667%;\n  max-width: 16.666667%;\n}\n\n.col-auto {\n  -ms-flex:...