{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Java9 Samples\n",
    "\n",
    "From:\n",
    "\n",
    "http://hg.openjdk.java.net/kulla/dev/langtools/file/cf2fa1607bd0/repl/samples"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "import java.util.*;\n",
    "int n = 12;\n",
    "int p = 0, c = 1, a; \n",
    "List<Integer> list = new ArrayList<>();\n",
    "\n",
    "while (n-- > 0) {\n",
    "    list.add(c);\n",
    "    a = p + c;\n",
    "    p = c;\n",
    "    c = a;\n",
    "}\n",
    "\n",
    "System.out.println(list);"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "int var1 = 2\n",
    "int meth2() { \n",
    "    return var1+2; \n",
    "}\n",
    "\n",
    "++var1\n",
    "    \n",
    "class class3 { \n",
    "    int meth4() { \n",
    "        return var1 * meth2(); \n",
    "    } \n",
    "}\n",
    "\n",
    "System.out.println(new class3().meth4())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "int passCnt\n",
    "int failCnt\n",
    "int unexpectedCnt\n",
    "\n",
    "void check(boolean pass) {\n",
    "  if (pass) {\n",
    "    System.out.println(\"pass\");\n",
    "    ++passCnt;\n",
    "  } else {\n",
    "    System.out.println(\"FAIL\");\n",
    "    ++failCnt;\n",
    "  }\n",
    "}\n",
    "\n",
    "void expectError(boolean huh) {\n",
    "  System.out.println(\"Should not be here, should be error\");\n",
    "  ++unexpectedCnt;\n",
    "}\n",
    "\n",
    "int m() { return 100; }\n",
    "int m(int x) { return x; }\n",
    "int m(int x, int y) { return x * y; }\n",
    "\n",
    "check(m(5,4) == 20);\n",
    "check(m(7) == 7);\n",
    "check(m() == 100);\n",
    "int m(int x) { return x * 100; }\n",
    "check(m(3) == 300);\n",
    "check(m() == 100);\n",
    "check(m(5,4) == 20);\n",
    "int m() { return 1234; }\n",
    "check(m() == 1234);\n",
    "double m(int x, int y) { return x + y; }\n",
    "check(m(2,3) == 5.0);\n",
    "double m(double x, double y) { return y - x; }\n",
    "check(m(2.0,3.0) == 1.0);\n",
    "check(m(2,3) == 5.0);\n",
    "System.out.println((passCnt==10 && failCnt==0 && unexpectedCnt==0)? \n",
    "    \"Test passes!\" : \n",
    "    \"Test FAILED! Pass: \" + passCnt + \", Fail: \" + failCnt + \", Unexpected: \" + unexpectedCnt)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " System.out.println(\"Ok\")\n",
      "Ok\n",
      "\n",
      "\n"
     ]
    }
   ],
   "source": [
    "int passCnt;\n",
    "int failCnt;\n",
    "int unexpectedCnt;\n",
    "/*\n",
    "void check(boolean pass) {\n",
    "  if (pass) {\n",
    "    System.out.println(\"pass\");\n",
    "    ++passCnt;\n",
    "  } else {\n",
    "    System.out.println(\"FAIL\");\n",
    "    ++failCnt;\n",
    "  }\n",
    "}\n",
    "*/\n",
    "/*\n",
    "void expectError(boolean huh) {\n",
    "  System.out.println(\"Should not be here, should be error\");\n",
    "  ++unexpectedCnt;\n",
    "}\n",
    "*/\n",
    "int x;\n",
    "//int mu() { return x * 4; }\n",
    "//class C {\n",
    "//  String v() { return \"#\" + mu(); }\n",
    "//}\n",
    "//new C();\n",
    "//check($1.v().equals(\"#0\"))\n",
    "    /*\n",
    "int x = 10\n",
    "check($1.v().equals(\"#40\"))\n",
    "C c = new C()\n",
    "check(c.v().equals(\"#40\"))\n",
    "int mu() { return x * 3; }\n",
    "check(c.v().equals(\"#30\"))\n",
    "class C {\n",
    "  String v() { return \"@@\" + mu(); }\n",
    "}\n",
    "check($1.v().equals(\"@@30\"))\n",
    "c = new C()\n",
    "check(c.v().equals(\"@@30\"))\n",
    "double x = 2.5\n",
    "check(x == 2.5)\n",
    "*/\n",
    "/*\n",
    "expectError(mu() == 30)\n",
    "c = new C()\n",
    "expectError(c.v().equals(\"@@30\"))\n",
    "int mu() { return (int) (x * 10); }\n",
    "check(mu() == 25)\n",
    "c = new C()\n",
    "check(c.v().equals(\"@@25\"))\n",
    "double mu() { return x * 2.0; }\n",
    "check(mu() == 5.0)\n",
    "check($1.v().equals(\"@@5.0\"))\n",
    "c = new C()\n",
    "check(c.v().equals(\"@@5.0\"))\n",
    "class C {\n",
    "  Object v() { return mu(); }\n",
    "}\n",
    "//check($1 == null)  //TODO fix update of temp vars\n",
    "C d = new C()\n",
    "check(d.v().equals(5.0))\n",
    "\n",
    "System.out.println((passCnt==13 && failCnt==0 && unexpectedCnt==0)? \n",
    "    \"Test passes!\" : \n",
    "    \"Test FAILED! Pass: \" + passCnt + \", Fail: \" + failCnt + \", Unexpected: \" + unexpectedCnt)\n",
    "    */\n",
    "System.out.println(\"Ok\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " System.out.println(\"Ok\")\n",
      "Ok\n",
      "\n",
      "\n"
     ]
    }
   ],
   "source": [
    "System.out.println(\"Ok\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " tree.left = new Tree(2);\n",
      "|  Expression value is: Tree@33e5ccce\n",
      "|    assigned to temporary variable $1 of type Tree\n",
      "\n",
      "\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "Tree@33e5ccce"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "class Tree {\n",
    "    Tree left;\n",
    "    Tree right;\n",
    "    int value;\n",
    "    \n",
    "    Tree(int value) {\n",
    "        this.value = value;\n",
    "    }\n",
    "}\n",
    "\n",
    "Tree tree = new Tree(10);\n",
    "tree.left = new Tree(2);"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " tree.left.value\n",
      "|  Expression value is: 2\n",
      "|    assigned to temporary variable $2 of type int\n",
      "\n",
      "\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "2"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "tree.left.value"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " $2\n",
      "|  Variable $2 of type int has value 2\n",
      "\n",
      "\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "2"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "$2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      " System.out.println(y)\r\n",
      "|  Error:\r\n",
      "|  cannot find symbol\r\n",
      "|    symbol:   variable y\r\n",
      "|  System.out.println(y)\r\n",
      "|                     ^\r\n",
      "\r\n",
      "\n"
     ]
    }
   ],
   "source": [
    "System.out.println(y)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      " System.out.println(1/0)\r\n",
      "|  java.lang.ArithmeticException thrown: / by zero\r\n",
      "|        at (#9:1)\r\n",
      "\r\n",
      "\n"
     ]
    }
   ],
   "source": [
    "System.out.println(1/0)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " System.out.println(\"ok\")\n",
      "ok\n",
      "\n",
      "\n"
     ]
    }
   ],
   "source": [
    "System.out.println(\"ok\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "%%python\n",
    "\n",
    "kernel.javawrapper.child.send(\"varia\")\n",
    "kernel.javawrapper.child.sendcontrol('t')\n",
    "kernel.javawrapper.child.sendeof()\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      " varia\u0007\u0007System.out.println(\"ok\")\r\n",
      "|  Error:\r\n",
      "|  package variaSystem does not exist\r\n",
      "|  variaSystem.out.println(\"ok\")\r\n",
      "|  ^-------------^\r\n",
      "\r\n",
      "\n"
     ]
    }
   ],
   "source": [
    "System.out.println(\"ok\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " /help\n",
      "Type a Java language expression, statement, or declaration.\n",
      "Or type one of the following commands:\n",
      "\n",
      "/l  or /list [all]                -- list the source you have typed\n",
      "       /seteditor <executable>    -- set the external editor command to use\n",
      "/e  or /edit <name or id>         -- edit a source entry referenced by name or id\n",
      "/s  or /save [all|history] <file> -- save the source you have typed\n",
      "/o  or /open <file>               -- open a file as source input\n",
      "/v  or /vars                      -- list the declared variables and their values\n",
      "/m  or /methods                   -- list the declared methods and their signatures\n",
      "/c  or /classes                   -- list the declared classes\n",
      "/x  or /exit                      -- exit the REPL\n",
      "/r  or /reset                     -- reset everything in the REPL\n",
      "/f  or /feedback <level>          -- feedback information: off, concise, normal, verbose, default, or ?\n",
      "/p  or /prompt                    -- toggle display of a prompt\n",
      "/cp or /classpath <path>          -- add a path to the classpath\n",
      "/h  or /history                   -- history of what you have typed\n",
      "       /setstart <file>           -- read file and set as the new start-up definitions\n",
      "       /savestart <file>          -- save the default start-up definitions to the file\n",
      "/?  or /help                      -- this help message\n",
      "\n",
      "Supported shortcuts include:\n",
      "<tab>       -- show possible completions for the current text\n",
      "Shift-<tab> -- for current method or constructor invocation, show a synopsis of the method/constructor\n",
      "\n",
      "\n"
     ]
    }
   ],
   "source": [
    "/help"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " /classes\n",
      "\n",
      "\n"
     ]
    }
   ],
   "source": [
    "/help"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " /help\n",
      "Type a Java language expression, statement, or declaration.\n",
      "Or type one of the following commands:\n",
      "\n",
      "/l  or /list [all]                -- list the source you have typed\n",
      "       /seteditor <executable>    -- set the external editor command to use\n",
      "/e  or /edit <name or id>         -- edit a source entry referenced by name or id\n",
      "/s  or /save [all|history] <file> -- save the source you have typed\n",
      "/o  or /open <file>               -- open a file as source input\n",
      "/v  or /vars                      -- list the declared variables and their values\n",
      "/m  or /methods                   -- list the declared methods and their signatures\n",
      "/c  or /classes                   -- list the declared classes\n",
      "/x  or /exit                      -- exit the REPL\n",
      "/r  or /reset                     -- reset everything in the REPL\n",
      "/f  or /feedback <level>          -- feedback information: off, concise, normal, verbose, default, or ?\n",
      "/p  or /prompt                    -- toggle display of a prompt\n",
      "/cp or /classpath <path>          -- add a path to the classpath\n",
      "/h  or /history                   -- history of what you have typed\n",
      "       /setstart <file>           -- read file and set as the new start-up definitions\n",
      "       /savestart <file>          -- save the default start-up definitions to the file\n",
      "/?  or /help                      -- this help message\n",
      "\n",
      "Supported shortcuts include:\n",
      "<tab>       -- show possible completions for the current text\n",
      "Shift-<tab> -- for current method or constructor invocation, show a synopsis of the method/constructor\n",
      "\n",
      "\n"
     ]
    }
   ],
   "source": [
    "/help"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "%%python\n",
    "\n",
    "kernel.javawrapper.child.read(10)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " int variable_name = 1;\n",
      "|  Added variable variable_name of type int with initial value 1\n",
      "\n",
      "\n"
     ]
    }
   ],
   "source": [
    "int variable_name = 1;"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " variable_name\n",
      "|  Variable variable_name of type int has value 1\n",
      "\n",
      "\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "1"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "variable_name"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " variable_name\n",
      "|  Variable variable_name of type int has value 1\n",
      "\n",
      "\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "1"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "variable_name"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " variable_name\n",
      "|  Variable variable_name of type int has value 1\n",
      "\n",
      "\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "1"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "variable_name"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " variable_name\n",
      "|  Variable variable_name of type int has value 1\n",
      "\n",
      "\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "1"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "variable_name"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Java 9",
   "language": "java",
   "name": "java"
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   "file_extension": ".class",
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