[
  {
    "name": "Java and its divisions",
    "open": true,
    "children": [
      { "name": "Java Standard Edition, J2SE" },
      { "name": "Java Enterprise Edition, J2EE" },
      { "name": "Java Mobile Edition, J2ME"}
    ]
  },
  {
    "name": "UI",
    "open": true,
    "children": [
      { "name": "Hyper Text Markup Language, HTML"},
      { "name": "Cascading Style Sheets, CSS"},
      { "name": "JavaScript, JS",
        "children": [
          { "name": "Bootstrap JS" },
          { "name": "Mustache JS" },
          { "name": "Angular JS" }
        ]
      }
    ]
  },
  {
    "name": "Server",
    "open": true,
    "children" : [
      { "name": "Node JS"},
      { "name": "Express JS"},
      { "name": "PHP"}
    ]
  },
  {
    "name": "Java backend",
    "open": true,
    "children" : [
      { "name": "Spring MVC"},
      { "name": "Hibernate"}
    ]
  }
]