can you pleqse please answer all three quesrions

Consider the following code snippet: cotncoin1= nul1 System,out.println ("Value of coin =" + coinl.getValue()); What is wrong with this code? coin 1 does not refer to an object and will result in an error at run time. The value variable in coin1 has not been set, and will print as 0 . You cannot concatenate a numeric value with a string value. There is nothing wrong with this code. Consider the following code snippet: publie class Autorace ( privata int 1 apcount: pnivate double totaltime; 3 Which of the following complete Lap methods would correctly track how many laps occurred? 3 Which of the following statements about comparing objects is correct? The equals method is used to compare whether two references are to the same object. The equals method is used to compare whether two objects have the same contents. The == operator is used to compare whether two objects have the same contents. The equals method and the == operator are perform the same actions