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Free Oracle 1Z0-829 Exam Questions

Become Oracle Certified with updated 1Z0-829 exam questions and correct answers

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Total 660 Questions | Updated On: Apr 15, 2026
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Question 1

Question ID: UK8293780
Given code of Test.java file:
package com.examtest.ocp;
 
interface Blogger {
    default void blog() throws Exception {
        System.out.println("GENERIC");
    }
}
 
class TravelBlogger implements Blogger {
    public void blog() {
        System.out.println("TRAVEL");
    }
}
 
public class Test {
    public static void main(String[] args) {
        Blogger blogger = new TravelBlogger(); //Line n1
        ((TravelBlogger)blogger).blog(); //Line n2
    }
}
What is the result?

Answer: D
Question 2

Question ID: UK8297789
Given code of Test.java file:
package com.examtest.ocp;
 
import java.util.ArrayList;
import java.util.List;
 
public class Test {
    public static void main(String[] args) {
        Boolean [] arr = new Boolean[2];
        List<Boolean> list = new ArrayList<>();
        list.add(arr[0]);
        list.add(arr[1]);
        
        if(list.remove(0)) {
            list.remove(1);
        }
        
        System.out.println(list);
    }
}
What is the result?

Answer: C
Question 3

Question ID: UK8292005
Given code of Test.java file:
package com.examtest.ocp;
 
public class Test<T> {
    private T t;
 
    public T get() {
        return t;
    }
 
    public void set(T t) {
        this.t = t;
    }
 
    public static void main(String args[]) {
        Test obj = new Test();
        obj.set("OCP");
        obj.set(85);
        obj.set('%');
 
        System.out.println(obj.get());
    }
}
What is the result?

Answer: D
Question 4

Question ID: UK8296889
Given code of Test.java file:
package com.examtest.ocp;
 
class GrandParent {}
 
class Parent extends GrandParent {}
 
class Child extends Parent {}
 
class GrandChild extends Child {}
 
public class Test {
    public static void main(String... args) {
        GrandParent obj = new Child();
        if(!(obj instanceof GrandChild gc)) {
            System.out.print("Not a GrandChild");
            /*INSERT-1*/
        } 
        /*INSERT-2*/
        System.out.println(gc); //Line n2
    }
}
And the statements:
1. Above code causes compilation error
2. Above code compiles successfully and prints: Not a GrandChild
3. To resolve compilation error, replace /*INSERT-1*/ with return;
4. To resolve compilation error, replace /*INSERT-2*/ with else
How many of the above statements is/are correct?

Answer: C
Question 5

Question ID: UK8293374
Which of the following are Java Exception classes?
Choose 3 options.

Answer: A,C,D
Page:    1 / 132      
Total 660 Questions | Updated On: Apr 15, 2026
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