Java.lang.nullpointerexception: attempt to invoke virtual method 'long java.lang.long.longvalue()' on a null object reference

• 0 vote326 views1 answer

  Java or symbol

  Java
• 0 vote276 views1 answer

  Connectionpool in jdbc

  Java
• 22 votes313 views3 answers

  Java int array

  Java
• 0 vote303 views1 answer

  Android autocompletetextview hashmap

  Java
• 0 vote329 views2 answers

  Java array remove space

  Java
• 3 votes355 views1 answer

  Java read string input

  Java
• 1 vote344 views1 answer

  Java get color from string

  Java
• 2 votes306 views1 answer

  Java lambda foreach multiple statements

  Java
• 0 vote300 views2 answers

  Calculate number of weeks between two dates

  Java
• 0 vote306 views1 answer

  Junit check class type

  Java