why 'static' required for all methods ?

Answer 1

not for all methode if u call a method inside static methode than declared methode as a static and if u dont want to decalared methid but still u want to call non statc methode inside static than create the obj of that class on that object call non static methode.

hope u got some what...

Answer 2

yes

Answer 3

its not required for all methods. Only main method requires static to be mentioned. Based on requirement of calling other methods from main, it may be required

Answer 4

static is used for some methods when you exacatly want single copy/instance

Answer 5

Static = running the method can't modify the method, if I remember correctly