Cuestionario 15. 1Z0-808

Given the code fragment:

public static void main(String[] args) {
    boolean opt = true;
    switch (opt) {
        case true:
            System.out.print("True");
            break;
        default:
            System.out.print("***");
    }
    System.out.println("Done");
}

Which modification enables the code fragment to print TrueDone?

Given the following main method:

public static void main(String[] args) {
    int num = 5;
    do {
        System.out.print(num-- + " ");
    } while (num == 0);
}

What is the result?

Given the code fragment:

int x = 100;
int a = x++;
int b = ++x;
int c= x++;
int d =(a
What is the result?

Given:

public class Test {
 
    public static void main(String[] args) {
        String[][] chs = new String[2][];
        chs[0] = new String[2];
        chs[1] = new String[5];
        int i = 97;
 
        for (int a = 0; a < chs.length; a++) {
            for (int b = 0; b < chs.length; b++) {
                chs[a][b] = "" + i;
                i++;
            }
        }
 
        for (String[] ca : chs) {
            for (String c : ca) {
                System.out.print(c + " ");
            }
            System.out.println();
        }
    }
}

What is the result?

Given the code fragment:

public class Employee {
 
    String name;
    boolean contract;
    double salary;
 
    Employee() {
        // line n1
    }
 
    public String toString() {
        return name + ":" + contract + ":" + salary;
    }
 
    public static void main(String[] args) {
        Employee e = new Employee();
        // line n2
        System.out.print(e);
    }
}

Which two modifications, when made independently, enable the code to print joe:true:100.0?

View the exhibit:

public class Student {
 
    public String name = "";
    public int age = 0;
    public String major = "Undeclared";
    public boolean fulltime = true;
 
    public void display() {
        System.out.println("Name: " + name + " Major: " + major);
    }
 
    public boolean isFullTime() {
        return fulltime;
    }
}

Which line of code initializes a student instance?