[detter]

When you use "=" it means you are assigning something to the some value

Код:

new variable_A; // You create new variables ( empty "box") 
new variable_B;

variable_A = 1; // putting some value in "boxes"
variable_B = 243;

variable_A (variable_B) -> your container
1 (243) -> some value

and with "==" you check if something is equal to something else

Код:

if( variable_A == variable_B )
{
    // if variable_B is equal  to variable_A this part of code will be executed
}