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EXPERTY DESIGNED 1Z0-829 PRACTICE TEST

Oracle 1Z0-829 Exam Questions
Total Questions: 660
Java SE 17 Developer
Updated On: Jan 28, 2026
Page : 1-66
Question 1

Question ID: UK8294673
Consider below code of Test.java file:
package com.examtest.ocp;
 
abstract class Log {
    abstract long count(); //Line n1
    abstract Object get(); //Line n2
}
 
class CommunicationLog extends Log {
    int count() { //Line n3
        return 100;
    }
    
    String get() { //Line n4
        return "COM-LOG";
    }
}
 
public class Test {
    public static void main(String[] args) {
        Log log = new CommunicationLog(); //Line n5
        System.out.print(log.count());
        System.out.print(log.get());
    }
}
Which of the following statement is correct?

Options :
Answer: A
Question 2

Given the content of the in. tart file:

23456789

and the code fragment:




What is the content of the out .txt file? 

Options :
Answer: D
Question 3

Question ID: UK8295913
Given code of Test.java file:
package com.examtest.ocp;
 
record Rectangle(double length, double width) {}
 
record Square(double side) extends Rectangle {}
 
public class Test {
    public static void main(String[] args) {
        Square sq = new Square(10.0);
        System.out.println(sq);
    }
}
What is the result?

Options :
Answer: A
Question 4

Question ID: UK8298155
Following statement in a Java program compiles successfully:
student.report(course);
What can you say for sure?

Options :
Answer: C
Question 5

Question ID: UK8297722
Given code of Test.java file:
package com.examtest.ocp;
 
interface Rideable {
    void ride(String name);
}
 
class Animal {}
 
class Horse extends Animal implements Rideable {
    public void ride(String name) {
        System.out.println(name.toUpperCase() + " IS RIDING THE HORSE");
    }
}
 
public class Test {
    public static void main(String[] args) {
        Animal horse = new Horse();
        /*INSERT*/
    }
}
Which of the following options, if used to replace /*INSERT*/, will compile successfully and on execution will print EMMA IS RIDING THE HORSE on to the console?
Choose 4 options.

Options :
Answer: A,C
Page : 1-66

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