Actual and formal arguments Differ in length- Java Constructor error -

i starting learn java , ran problem can't solve. have class called myclass constructor. want set constructor access private field:

public class myclass{     private long variable1;     public myclass(long variable1){         this.variable1=variable1;     }     public long somethingelse(argument argument){         return somevalue;     }     } 

i can call somethingelse class when remove constructor. however, when try along lines

data = new myclass();  return data.somethingelse(argument); 

i error @ data = new myclass() actual , formal arguments differ in length , "requires long, found no arguments". how fix this?

from here:

the compiler automatically provides no-argument, default constructor class without constructors

when explicitly add constructor, override default no-arg one. so, back, add manually:

public class myclass{     private long variable1;      // need add.     public myclass() {     }      public myclass(long variable1){         this.variable1 = variable1;     }      public long somethingelse(argument argument){         return somevalue;     } }