Difference between revisions of "Java/C2/Constructor-overloading/English-timed"

| and  to overload '''constructor'''.

|  Here we are using  

| So type, '''''Student '''within''' '''parentheses''' int number '''comma''' String the_name.'''''

|Within curly brackets, type '''roll_number''' is equal to '''number.'''

| So we have a '''constructor''' with two parameters.

| So in '''main method''' type '''new Student''' parentheses semi colon

| So we need to  pass '''arguments'''.

| So within parentheses type '''22''' comma in double quotes '''Ram'''.

|Let us call the method.

| So before '''new ''' type '''Student s''' is equal to '''new student'''.

| Now using the object '''s''' we will call the method  ''' studentDetail()'''

| So type, '''Student''' parentheses.

| And ''' name is equal to in double quotes hyphen''' that is no name

|  So now we can call the '''constructor''' with no parameters.

| So type'' '''Student''' '''s1''' is equal to '''new''' '''Student''' parentheses'' semicolon.

|  This time we see no error, since we have define a constructor without parameter

|  Then''''' s1 '''dot''' studentDetail'''''.

| Both the '''constructor''' obviously have same name.

| So depending on the type and number of parameter, the '''constructor''' is called.  

| Let us see the advantage of '''constructor''' overloading.

| So type '''Student s3= new Student();'''

| Now within parentheses,  suppose i gave the '''name''' argument first and then the '''roll''' '''number.'''

| let see what happens.

| So in ''double quotes '''Raju''' comma '''45'''''

|  So let us define the constructor.

| So type '''''Student''' within parentheses '''String''' '''the_name''' comma '''int''' '''r_no'''''

|So over here first parameter is '''string'' and the second parameter is '''int'''

| Let us call the method.

| So '''s3''' ''dot'' '''studentDetail.'''

|  '''Save''' the program and '''Run'''   

|So we see the output '''45''' and '''Raju'''   

| So here we see that when we call the '''constructor'''.

| We do not have to worry about the parameters that we are passing.

| This is simply because we have define multiple '''constructor''' with different parameters.

| So the proper '''constructor''' is '''overloaded.'''

| So type '''Student''' within parentheses '''int num'''.

|  within curly brackets '''roll_number '''is equalto '''num'''.

| And '''name''' is equal to   '''no''' '''name'''.

| So type '''Student''' '''s4''' ''is'' ''equalto'' '''new''' '''Student'''  this time we will pass an  single argument. So let us pass '''61'''

|  '''Save''' and '''Run''' the program

| As we can see, the proper overloaded '''constructor''' is called when new is executed.  

| Based upon the parameters specified the proper '''constructor''' is overloaded.  

|  So in this tutorial, we have learnt  

| About the  '''constructor overloading.'''

|   to overload '''constructor''' and the use of constructor overloading

|  For self assessment, create multiple constructors for class '''Employee'''and   Overload the '''constructor.'''  

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