Explain the followings in java

Question

Please provide the solution with proper explanation!!
1. int a = 25;
System.out.println(a/4.0);
2. \\ Possible outputs
double d = Math.random(5)*10;
System.out.println(d);
(Edit:
3. int a=079;
System.out.println(a);

Answer 1

1. The variable a equals 25
System out println shows via console the result of the division of a (25) divided by 4

2. This case should cause an error. Java doesn't have a Math.random() method.

But let's say, that Math.random(5) gives a random number between 0 and 5

We get that number, and multiply it by 10. then we save it on the variable 'd'