Java if statement conditions being met but then not being executed [duplicate]

                    //the arrays are searched through to find cats matching the criteria
                    for (int i = 0; i < noCats; i++)
                    {                                               
                        if (identifyHairLength == hairLength[i])
                        {
                            con1 = "true";
                        }
                        else
                        {
                            con1 = "false";
                        }

here the value con1 should be updated to true as when testing both 'identifyHairLength' and 'hairLength[i]' are the same, but despite this con1 is still false??

                        System.out.println(identifyHairLength);
                        System.out.println(hairLength[i]);
                        System.out.println(con1);
                        
                        if (catAges[i] >= 7 && identifyOldYoung == "old")
                        {
                            con2 = "true";
                        }
                        else if (catAges[i] < 7 && identifyOldYoung == "young")
                        {
                            con2 = "true";
                        }
                        else
                        {
                            con2 = "false";
                        }
                        
                        
                        //if the users criteria matches the current cat being searched then it is output to the user.
                        if (con1 == "true" && con2 == "true")
                        {
                            System.out.println("-" + catNames[i] + ", who is " + catAges[i]);
                        }
                    }
                    break;
                }