--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/literals/BadUnderscoreLiterals.java Tue Sep 15 18:36:21 2009 -0700
@@ -0,0 +1,48 @@
+/*
+ * @test /nodynamiccopyright/
+ * @bug 6860973
+ * @summary Project Coin: underscores in literals
+ *
+ * @compile/fail BadUnderscoreLiterals.java
+ * @compile/fail/ref=BadUnderscoreLiterals.7.out -XDrawDiagnostics BadUnderscoreLiterals.java
+ *
+ * @compile/fail -source 6 BadUnderscoreLiterals.java
+ * @compile/fail/ref=BadUnderscoreLiterals.6.out -XDrawDiagnostics -source 6 BadUnderscoreLiterals.java
+ */
+
+public class BadUnderscoreLiterals {
+ int valid = 1_1; // valid literal; illegal in -source 6
+
+ // test zero
+ int z1 = _0; // valid (but undefined) variable
+ int z2 = 0_; // trailing underscore
+
+ // test simple (decimal) integers
+ int i1 = _1_2_3; // valid (but undefined) variable
+ int i2 = 1_2_3_; // trailing underscore
+
+ // test binary integers
+ int b1 = 0b_0; // leading underscore after radix
+ int b2 = 0b0_; // trailing underscore
+
+ // test hexadecimal integers
+ int x1 = 0x_0; // leading underscore after radix
+ int x2 = 0x0_; // trailing underscore
+
+ // test floating point numbers
+ float f1 = 0_.1; // trailing underscore before decimal point
+ float f2 = 0._1; // leading underscore after decimal point
+ float f3 = 0.1_; // trailing underscore
+ float f4 = 0.1_e0; // trailing underscore before exponent
+ float f5 = 0e_1; // leading underscore in exponent
+ float f6 = 0e1_; // trailing underscore in exponent
+
+ // hexadecimal floating point
+ float xf1 = 0x_0.1p0; // leading underscore after radix
+ float xf2 = 0x0_.1p0; // trailing underscore before decimal point
+ float xf3 = 0x0._1p0; // leading underscore after decimal point
+ float xf4 = 0x0.1_p0; // trailing underscore before exponent
+ float xf5 = 0x0p_1; // leading underscore after exponent
+ float xf6 = 0x0p1_; // trailing underscore
+}
+