Aggiunti alcuni esercizi di java.

karls-languages/.exercism/config.json

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+{
+  "authors": [
+    "jmrunkle"
+  ],
+  "files": {
+    "solution": [
+      "src/main/java/LanguageList.java"
+    ],
+    "test": [
+      "src/test/java/LanguageListTest.java"
+    ],
+    "exemplar": [
+      ".meta/src/reference/java/LanguageList.java"
+    ],
+    "invalidator": [
+      "build.gradle"
+    ]
+  },
+  "icon": "language-list",
+  "blurb": "Learn about lists by helping Karl keep track of the languages he wants to learn on Exercism."
+}

karls-languages/.exercism/metadata.json

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+{"track":"java","exercise":"karls-languages","id":"6d0efea5b2474ac9bc05f47cef326263","url":"https://exercism.org/tracks/java/exercises/karls-languages","handle":"GicoProgram","is_requester":true,"auto_approve":false}