Adding upstream version 2:9.1.1230.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

runtime/syntax/testdir/input/java_previews_455.java

@@ -0,0 +1,64 @@
+// VIM_TEST_SETUP let g:java_syntax_previews = [455]
+
+
+
+class PrimitiveSwitchTests	// JDK 23+ (--enable-preview --release 23).
+{
+	static void echo(Object o) { System.out.println(o); }
+
+	static {
+		long g = 2L;
+
+		switch (g) {
+		case 0L:		{ echo(0L); break; }
+		case 1L:		{ echo(1L); break; }
+		default:		{ echo(-1L); break; }
+		}
+
+		echo(switch (g) {
+			case 0L		-> 0L;
+			case 1L		-> 1L;
+			default		-> -1L;
+		});
+
+		boolean bool = false;
+
+		switch (bool) {
+		case true:		{ echo(true); break; }
+		case false:		{ echo(false); break; }
+		}
+
+		echo(switch (bool) {
+			case true	-> true;
+			case false	-> false;
+		});
+
+		float f = 2.0f;
+
+		switch (f) {
+		case 0.0f:		{ echo(0.0f); break; }
+		case 1.0f:		{ echo(1.0f); break; }
+		default:		{ echo(-1.0f); break; }
+		}
+
+		echo(switch (f) {
+			case 0.0f	-> 0.0f;
+			case 1.0f	-> 1.0f;
+			default		-> -1.0f;
+		});
+
+		double d = 2.0;
+
+		switch (d) {
+		case 0.0:		{ echo(0.0); break; }
+		case 1.0:		{ echo(1.0); break; }
+		default:		{ echo(-1.0); break; }
+		}
+
+		echo(switch (d) {
+			case 0.0	-> 0.0;
+			case 1.0	-> 1.0;
+			default		-> -1.0;
+		});
+	}
+}