+= means?

Question

answer please

Answer 1

https://www.sololearn.com/learn/Java/2141/?ref=app
//3rd : assignment operators

Answer 2

+= is shortened form for adding value in certain variable. For example "a = a + 2" is same as "a += 2"

Answer 3

it's known as short hand assignment operator.

+= is used to add to values and store them in the 1st one variable.
int A=5, B=10;
A = A+B; //A=15

it can be written as,
int A=5, B=10;
A += B; //A=15

both will produce the same output. it's save the time and looks pretty cool.

there are some other assignment operators,

A+=B ~ A=A+B
A-=B ~ A=A-B
A*=B ~ A=A*B
A/=B ~ A=A/B
A%=B ~ A=A%B
A<<=B ~ A=A<<B
A>>=B ~ A=A>>B