Become Oracle Certified with updated 1Z0-808 exam questions and correct answers
Given:

Given code:
package com.udayan.oca;
public class Test {
public static void main(String[] args) {
/*INSERT*/
arr[1] = 5;
arr[2] = 10;
System.out.println("[" + arr[1] + ", " + arr[2] + "]"); //Line n1
}
}
And below statements:
1. short arr [] = new short[2];
2. byte [] arr = new byte[10];
3. short [] arr; arr = new short[3];
4. short [2] arr;
5. short [3] arr;
6. int [] arr = new int[]{100, 100};
7. int [] arr = new int[]{0, 0, 0, 0};
8. short [] arr = {};
9. short [] arr = new short[2]{5, 10};
How many above statements can be used to replace /*INSERT*/, such that on execution, code will print [5, 10] on to the console?
Consider below codes of 3 java files:
1. //M.java
2. package com.sampleproject.oca;
3.
4. public class M {
5. public void printName() {
6. System.out.println("M");
7. }
8. }
1. //N.java
2. package com.sampleproject.oca;
3.
4. public class N extends M {
5. public void printName() {
6. System.out.println("N");
7. }
8. }
1. //Test.java
2. package com.sampleproject.oca.test;
3.
4. import com.sampleproject.oca.*;
5.
6. public class Test {
7. public static void main(String[] args) {
8. M obj1 = new M();
9. N obj2 = (N)obj1;
10. obj2.printName();
11. }
12. }
What will be the result of compiling and executing Test class?
Consider the following class:
1. package com.udayan.oca;
2.
3. public class Employee {
4. public int passportNo; //line 2
5. }
Which of the following is the correct way to make the variable 'passportNo' read only for any other class?
What will be the result of compiling and executing Test class?
package com.udayan.oca;
public class Test {
public static void main(String[] args) {
String str = "Java Rocks!";
System.out.println(str.length() + " : " + str.charAt(10));
}
}
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