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Exam Code: 1Z0-829
Exam Questions: 660
Java SE 17 Developer
Updated: 25 Nov, 2025
Question 1

Question ID: UK8295506
Given code of Test.java file:
package com.examtest.ocp;
 
public class Test {
    public static void main(String[] args) {
        String[] arr = { "L", "I", "V", "E" }; //Line n1
        int i = -2;
 
        if (i++ == -1) { //Line n2
            arr[-(--i)] = "F"; //Line n3
        } else if (--i == -2) { //Line n4
            arr[-++i] = "O"; //Line n5
        }
 
        System.out.println(String.join("", arr)); //Line n6
    }
}
What is the result?

Options :
Answer: A
Question 2

Given code of Test.java file:
package com.examtest.ocp;

public class Test {
    private static String print(String... args) {
        return String.join("-", args); //Line n1
    }
    
    private static Object print(Object... args) {
        String str = "";
        for(Object obj : args) {
            if(obj instanceof String) { //Line n2
                str += (String) obj; //Line n3
            }
        }
        return str; //Line n4
    }
    
    public static void main(String... args) {
        Object obj1 = new String("SPORT"); //Line n5
        Object obj2 = new String("MAD"); //Line n6
        System.out.println(print(obj1, obj2)); //Line n7
    }
}
What is the result?

Options :
Answer: A
Question 3

Question ID: UK8294645
Given code of Test.java file:
package com.examtest.ocp;
 
import java.io.IOException;
import java.sql.SQLException;
 
class MyResource implements AutoCloseable {
    @Override
    public void close() throws IOException{
        throw new IOException("IOException");
    }
 
    public void execute() throws SQLException {
        throw new SQLException("SQLException");
    }
}
 
public class Test {
    public static void main(String[] args) {
        try(MyResource resource = new MyResource()) {
            resource.execute();
        } catch(Exception e) {
            System.out.println(e.getMessage());
        }
    }
}
What is the result?

Options :
Answer: B
Question 4

Question ID: UK8292097
Below is the code of Test.java file:
package com.examtest.ocp;
 
import java.util.*;
 
public class Test {
    public static void main(String[] args) {
        var list = new ArrayList<>(); //Line n1
        list.add("TAKE");
        list.add("THE");
        list.add("RISK");
 
        System.out.println(String.join(".", list)); //Line n2
    }
}
What is the result?

Options :
Answer: B
Question 5

Question ID: UK8292410
Consider below code of Test.java file:
package com.examtest.ocp;
 
public class Test {
    public static void main(String[] args) {
        Boolean b = Boolean.valueOf("tRUe");
        switch(b) {
            case true:
                System.out.println("ONE");
            case false:
                System.out.println("TWO");
            default: 
                System.out.println("THREE");
        }
    }
}
What is the result of compiling and executing Test class?

Options :
Answer: D
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