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EXPERTY DESIGNED 1Z0-829 PRACTICE TEST

Oracle 1Z0-829 Exam Questions
Total Questions: 660
Java SE 17 Developer
Updated On: Nov 11, 2025
Page : 1-66
Question 1

Question ID: UK8297797
Given code:
package com.examtest.ocp;
 
import java.util.ArrayList;
import java.util.List;
 
public class Test {
    public static void main(String[] args) {
       var list = new ArrayList<String>(); //Line n1
       list.add("A");
       list.add("M");
       var list_of_list = List.of(list); //Line n2
       list_of_list.get(0).set(1, "N"); //Line n3
       list_of_list.get(0).forEach(System.out::print); //Line n4
    }
}
What is the result?

Options :
Answer: D
Question 2

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 3

Question ID: UK8295509
Given code of Test.java file:
package com.examtest.ocp;
 
public class Test {
    public static void main(String[] args) {
        String arr1 [], arr2, arr3 = null; //Line n1
        arr1 = new String[2];
        arr1[0] = "A";
        arr1[1] = "B";
        arr2 = arr3 = arr1; //Line n2
        System.out.println(String.join("-", arr2)); //Line n3
    }
}
What is the result?

Options :
Answer: B
Question 4

Question ID: UK8295123
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) {
        List<Character> list = new ArrayList<>();
        list.add(0, 'E');
        list.add('X');
        list.add(1, 'P');
        list.add(3, 'O');
        
        if(list.contains('O')) {
            list.remove('O');
        }
        
        for(char ch : list) {
            System.out.print(ch);
        }
    }
}
What is the result?

Options :
Answer: B
Question 5

Given:




What is the result?

Options :
Answer: E
Page : 1-66

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