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

• 0 vote227 views1 answer

  Intellij evaluate expression

  Java
• 0 vote214 views1 answer

  Area of a Circle in Java Programming

  Java
• 1 vote222 views1 answer

  Get the first day of the current month in Java

  Java
• 3 votes231 views1 answer

  Ternary operator java

  Java
• 6 votes237 views2 answers

  ++i vs i++ java

  Java
• -1 vote217 views1 answer

  How to generate color codes in java

  Java
• 0 vote224 views1 answer

  Minecraft bukkit coding player sharing variable

  Java
• 0 vote252 views1 answer

  Spring amqp exchange not found

  JavaSpring
• 1 vote233 views1 answer

  String in Java is immutable or not

  Java
• 1 vote215 views1 answer

  Reflections java

  Java