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assertions

Language/Type: Java assertions
Author: Roy McElmurry (on 2010/12/28)

You will identify various assertions as being either always true, never true or sometimes true/sometimes false at various points in program execution. The comments in the method below indicate the points of interest. 

public static int assertionMystery(Scanner console) { 
    int a = -1; 
    int b = 0; 
    int next = console.nextInt(); 

    // Point A
    while (next != 0) { 
        // Point B
        b = Math.max(a, next); 
        a = next; 

        // Point C
        if (a == 42) { 
            // Point D
            a++; 
        } 

        next = console.nextInt(); 
    } 

    // Point E
    return b; 
}

Fill in each box of the the table below with ALWAYS, NEVER or SOMETIMES.

next == 0 a > 0 b >= next
Point A
Point B
Point C
Point D
Point E

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