#+Title: a collection of examples for ob-java tests
#+OPTIONS: ^:nil
* Simple
  :PROPERTIES:
  :ID:       6abbd6a0-b1b1-4fbf-96b6-6fbc024c4a6c
  :END:
#+name: simple
#+begin_src java :results output silent
  System.out.print(42);
#+end_src

#+name: simple_with_bracket
#+begin_src java :results output silent
  System.out.print("[42");
#+end_src

#+name: simple_with_quote
#+begin_src java :results output silent
  System.out.print("\"42\"");
#+end_src

#+name: simple_return_int
#+begin_src java :results silent
  return 42;
#+end_src

#+name: simple_return_float
#+begin_src java :results silent
  return 42.0;
#+end_src

#+name: simple_return_string
#+begin_src java :results silent
  return "forty two";
#+end_src

#+name: simple_with_main
#+begin_src java :results output silent
  public static void main(String[] args) {
      System.out.print(42);
  }
#+end_src

#+name: simple_with_main_args_array
#+begin_src java :results output silent
  public static void main(String args[]) {
      System.out.print(42);
  }
#+end_src

#+name: simple_with_class
#+begin_src java :results output silent
  public class Simple {
      public static void main(String[] args) {
          System.out.print(42);
      }
  }
#+end_src

#+name: simple_with_class_and_package
#+begin_src java :results output silent
  package pkg;
  public class Simple {
      public static void main(String[] args) {
          System.out.print(42);
      }
  }
#+end_src

#+name: simple_with_class_attr
#+begin_src java :results output silent :classname Simple
  public static void main(String[] args) {
      System.out.print(42);
  }
#+end_src

#+name: simple_with_class_attr_with_package
#+begin_src java :results output silent :classname pkg.Simple
  public static void main(String[] args) {
      System.out.print(42);
  }
#+end_src

* Args
  :PROPERTIES:
  :ID:       0f1bb86b-9c9e-4ade-aaec-30b37965df1c
  :END:
#+name: one-arg
#+begin_src java :results output silent :cmdline "fortytwo"
  System.out.print(args[0]);
#+end_src

#+name: quoted_string_arg
#+begin_src java :results output silent :cmdline "\"forty two\" 42"
  System.out.println(args[0]);
  System.out.println(args[1]);
#+end_src

* Variables
  :PROPERTIES:
  :ID:       d532cde5-2f7e-4415-99ba-3d99d148b9db
  :END:

#+name: integer_var
#+begin_src java :var a=42 :results output silent
  System.out.print(a);
#+end_src

#+name: var_with_main
#+begin_src java :var a=42 :results output silent
  public static void main(String[] args) {
      System.out.print(a);
  }
#+end_src

#+name: var_with_class
#+begin_src java :var a=42 :results output silent
  public class Main {
      public static void main(String[] args) {
          System.out.print(a);
      }
  }
#+end_src

#+name: var_with_class_and_package
#+begin_src java :var a=42 :results output silent
  package pkg;
  public class Main {
      public static void main(String[] args) {
          System.out.print(a);
      }
  }
#+end_src

#+name: var_with_class_and_hanging_curlies
#+begin_src java :var a=42 :results output silent
  public class Main
  {
      public static void main(String[] args)
      {
          System.out.print(a);
      }
  }
#+end_src

#+name: two_vars
#+begin_src java :var a=21 b=2 :results output silent
  System.out.print(a*b);
#+end_src

#+name: string_var
#+begin_src java :var a="forty two" :results output silent
  System.out.print(String.format("%s, len=%d", a, a.length()));
#+end_src

#+name: mulitline_string_var
#+begin_src java :var a="forty\ntwo" :results output silent
  System.out.print(String.format("%s, len=%d", a, a.length()));
#+end_src

* Array
  :PROPERTIES:
  :ID:       3512119d-a2da-43c1-af7b-19a3cb72f76d
  :END:

#+name: java_list
- forty
- two

#+name: return_vector_using_list
#+begin_src java :results vector silent
  import java.util.List;
  import java.util.Arrays;
  List<List<Integer>> a = Arrays.asList(Arrays.asList(4),
                                        Arrays.asList(2));
  return a;
#+end_src

#+name: return_vector_using_array
#+begin_src java :results vector silent
  Integer[][] a = {{4}, {2}};
  return a;
#+end_src

#+name: read_return_list
#+begin_src java :var a=java_list :results silent
  import java.util.List;
  import java.util.Arrays;
  List<String> b = Arrays.asList(a.get(0).get(0),
                                 a.get(1).get(0));
  return b;
#+end_src

#+name: read_list_return_array
#+begin_src java :var a=java_list :results silent
  String[] b = {a.get(0).get(0), a.get(1).get(0)};
  return b;
#+end_src

#+name: read_return_list_with_package
#+begin_src java :var a=java_list :results silent
  package pkg;
  import java.util.List;
  import java.util.Arrays;
  List<String> b = Arrays.asList(a.get(0).get(0),
                                 a.get(1).get(0));
  return b;
#+end_src

#+name: write_output_list_with_spaces
#+begin_src java :results output list raw silent
  System.out.println("forty two");
  System.out.println("forty two");
#+end_src

* Matrix
  :PROPERTIES:
  :ID:       2b99499f-c12f-44fd-9b5d-1af929ca0079
  :END:
#+name: java_matrix
| 2 | 1 |
| 4 | 2 |

#+name: list_var
#+begin_src java :var a='("forty" "two") :results silent
  import java.util.List;
  List<String> b = a;
  return b;
#+end_src

#+name: vector_var
#+begin_src java :var a='["forty" "two"] :results silent
  import java.util.List;
  List<String> b = a;
  return b;
#+end_src

#+name: matrix_var
#+begin_src java :var a=java_matrix :results silent
  import java.util.List;
  import java.util.Arrays;
  List<List<Integer>> b = Arrays.asList(Arrays.asList(a.get(0).get(0), a.get(1).get(0)),
                                        Arrays.asList(a.get(0).get(1), a.get(1).get(1)));
  return b; // transpose
#+end_src

#+name: matrix_var_with_header
#+begin_src java :var a=java_matrix :results value table silent
  import java.util.List;
  import java.util.Arrays;
  List<List> b = Arrays.asList(Arrays.asList("col1", "col2"),
                                       null,
                                       Arrays.asList(a.get(0).get(0), a.get(1).get(0)),
                                       Arrays.asList(a.get(0).get(1), a.get(1).get(1)));
  return b; // transpose
#+end_src

#+name: output_table_with_header
#+begin_src java :var a=java_matrix :results output raw table silent
  System.out.println("|col1|col2|");
  System.out.println("|-");
  for (int ii=0; ii<a.size(); ii++) {
      for (int jj=0; jj<a.get(0).size(); jj++) {
          System.out.print("|" + a.get(ii).get(jj));
      }
      System.out.println("");
   }
#+end_src

* Inhomogeneous Table
  :PROPERTIES:
  :ID:       7fc09793-68e6-421c-8245-284863d025bf
  :END:

#+name: java_table
  | string | number |
  |--------+--------|
  | forty  |      2 |
  | two    |      1 |

#+name: inhomogeneous_table
#+begin_src java :var a=java_table :results silent
  import java.util.List;
  import java.util.Arrays;
  List<List> b = Arrays.asList(Arrays.asList(a.get(0).get(0),
                                             Integer.parseInt(a.get(0).get(1))*2),
                               Arrays.asList(a.get(1).get(0),
                                             Integer.parseInt(a.get(1).get(1))*2));
  return b;
#+end_src

* Library
  :PROPERTIES:
  :ID:       3ce0d53f-780a-4769-8614-cbdd3e265708
  :END:

#+name: import_library
#+begin_src java :results output silent :imports java.util.Base64
  byte[] encoded = Base64.getEncoder().encode("42".getBytes());
  String decoded = new String(Base64.getDecoder().decode(encoded));
  System.out.print(String.format("encoded=%s, decoded=%s", new String(encoded), decoded));
#+end_src

#+name: import_library_inline
#+begin_src java :results output silent
  import java.util.Base64;
  byte[] encoded = Base64.getEncoder().encode("42".getBytes());
  String decoded = new String(Base64.getDecoder().decode(encoded));
  System.out.print(String.format("encoded=%s, decoded=%s", new String(encoded), decoded));
#+end_src