While adding syntax highlighting for underscores and binary literals introduced in Java 7 to DrJava, I discovered that a few other numbers aren’t syntax-highlighted correctly. Some of these problems go back to the beginning of Java, others go back to Java 5, when the obscure hexadecimal floating-point literal was introduced.
Here are the numbers that give DrJava’s syntax highlighter trouble:
1 2 3 4 5 6 7 8 9 10 11 12 | float f = 6.022137e+23f; f = 2.f; f = .3f; double d = 2.; d = .3; d = 1e-9d; double x = 0x1.8p1; x = 0x1.fffffffffffffp1023; x = 0x1.0P-1074; x = 0x0.0000000000001P-1022; |
Did you know about these hexadecimal floating-point literals? I didn’t.
I created a bug report for these Java 5 highlighting bugs.
References: