FEAT: Adding java snippets

lua/snippets/java.lua

@@ -0,0 +1,23 @@
+local ls = require("luasnip")
+
+local s = ls.snippet
+local t = ls.text_node
+local i = ls.insert_node
+local fmt = require("luasnip.extras.fmt").fmt
+
+-- https://github.com/L3MON4D3/LuaSnip/blob/master/DOC.md
+return {
+    s(
+        "main",
+        fmt([[
+        static void main (){{
+            {a} 
+        }}
+        ]],
+    {a = i(1)}
+    )),
+    s("sout", fmt("System.out.println(\"{}\");", { i(1, "My message")})),
+    s("soutm", t("System.out.println(\"$CLASS_NAME$.$METHOD_NAME$\");")),
+    s("soutp", t("System.out.println(\"$FORMAT$\");")),
+    s("soutv", t("System.out.println(\"$EXPR_COPY$ = \" + $EXPR$);")),
+}