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The questions for 1Z0-809 were last updated on Apr 1, 2025.
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Assume customers.txt is accessible and contains multiple lines.
Which code fragment prints the contents of the customers.txt file?
Given:
public final class IceCream {
public void prepare() {}
}
public class Cake {
public final void bake(int min, int temp) {}
public void mix() {}
}
public class Shop {
private Cake c = new Cake ();
private final double discount = 0.25;
public void makeReady () { c.bake(10, 120); }
}
public class Bread extends Cake {
public void bake(int minutes, int temperature) {}
public void addToppings() {}
}
Which statement is true?
Given:
class Student {
String course, name, city;
public Student (String name, String course, String city) {
this.course = course; this.name = name; this.city = city;
}
public String toString() {
return course + '':'' + name + '':'' + city;
}
and the code fragment:
List
new Student (''Jessy'', ''Java ME'', ''Chicago''),
new Student (''Helen'', ''Java EE'', ''Houston''),
new Student (''Mark'', ''Java ME'', ''Chicago''));
stds.stream()
.collect(Collectors.groupingBy(Student::getCourse))
.forEach(src, res) -> System.out.println(scr));
What is the result?
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