Java: Added missing :: operator (#2101)

This adds the `::` operator and removes the backreference for better performance.

Author: RunDevelopment

components/prism-java.js

@@ -23,7 +23,7 @@
 		],
 		'number': /\b0b[01][01_]*L?\b|\b0x[\da-f_]*\.?[\da-f_p+-]+\b|(?:\b\d[\d_]*\.?[\d_]*|\B\.\d[\d_]*)(?:e[+-]?\d[\d_]*)?[dfl]?/i,
 		'operator': {
-			pattern: /(^|[^.])(?:<<=?|>>>?=?|->|([-+&|])\2|[?:~]|[-+*/%&|^!=<>]=?)/m,
+			pattern: /(^|[^.])(?:<<=?|>>>?=?|->|--|\+\+|&&|\|\||::|[?:~]|[-+*/%&|^!=<>]=?)/m,
 			lookbehind: true
 		}
 	});

components/prism-java.min.js

@@ -21,8 +21,7 @@ Bar::foo;
 	["punctuation", ";"],
 
 	["class-name", "Bar"],
-	["operator", ":"],
-	["operator", ":"],
+	["operator", "::"],
 	["function", "foo"],
 	["punctuation", ";"]
 ]

tests/languages/java/function_featrue.test

@@ -11,7 +11,7 @@
 * *=
 / /=
 % %=
-->
+-> ::
 
 ----------------------------------------------------
 
@@ -29,7 +29,7 @@
 	["operator", "*"], ["operator", "*="],
 	["operator", "/"], ["operator", "/="],
 	["operator", "%"], ["operator", "%="],
-	["operator", "->"]
+	["operator", "->"], ["operator", "::"]
 ]
 
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