What is difference between parameter and argument in java?

Answer 1

They are synonyms.

Some people use the word 'argument' for the 'formal parameter' and 'parameter' for the 'actual parameter', others do on the other way around.

PS:

example for the formal parameters (function declaration):

int myfun (const char *s, int p);

example for the actual parameters (function calling):

myfun ("Hello", 44);

Answer 2

A variable is an entity that is used to store some value which may change anywhere in the program.

Parameter is the entity that is used to combine two or more variables.

int x=9,y=9;

here x and y are the two different variables.

x=x+y;

y=x+y;

here x & y is a parameter used to link two variables x & y.

Answer 3

I believe it is two different names for the same thing.