equals methods when using arrays java -

for equals method checks see if 2 arrays equal, first method "equals" check if 2 arrays equal or tests memory addresses? or should include both?

   public boolean equals(object otherobject)     {        if (otherobject == null)        {            return false;        }        else if (getclass() != otherobject.getclass())        {            return false;        }        else        {           regressionmodel otherregressionmodel = (regressionmodel)otherobject;           return (xvalues == (otherregressionmodel.xvalues) && yvalues == (otherregressionmodel.yvalues));        }     } 

or

public static boolean equalarrays(double[] x, double[] y) {     if(x.length != y.length)     {         return false;     }     else     {         for(int index = 0; index < x.length; index++)         {             if (x[index] != y[index])             {                 return false;             }         }         return true;                  } } 

the =/!= operator compares arrays based upon reference, , not content. 2 arrays may have same elements, except still 2 distinct objects created in memory. arrays 2 references. therefore second method should applied, because compares actual elements inside 2 arrays. don't need else statement.

public static boolean equalarrays(double[] x, double[] y) {     if(x.length != y.length)     {         return false;     }     (int index = 0; index < x.length; index++)     {         if (x[index] != y[index])         {             return false;         }     }     return true;              }