Single and Double Or and And Operators

Question

What is the difference between | and || and ; & and &&

Answer 1

| And & are bitwise operators
https://www.tutorialspoint.com/java/java_bitwise_operators_examples.htm
https://www.programiz.com/java-programming/bitwise-operators

Answer 2

Though their function is same, there is a small difference in the way they are executed.
Incase of & operator,
It evaluates both sides of the operator ,while && evaluates the right side of the operator only if left side returns true.
Similarly,
The | evaluates both sides of the operator ,while || evaluates the right side of the operator only if left side returns false.

Example:
The output of the following line of code is 0,

int a =0,b=1;
if(a==1&--b>0)
System.out.println(b);

However, the out of the following code is 1,

int a=0,b=1;
if(a==1&&--b>0)
System.out.println(b);