Integer output from any 0 to 100 (java)

    System.out.println(Math.random()*100 + 1);
    System.out.println((int)Math.random() * 101);
    System.out.println((int)Math.random() * 100);
    System.out.println((int)Math.random() * 100 + 1);

Which command is enforced first in this problem? After outputting a random number up to 0.0<=x<1, do you perform a later operation? The answer is the second question, but I don't understand it well, so I'm asking you this question!