1Z0-803日本語 by Oracle Valid Free Exam Practice Test

Question 1

A. DuplicatePathException B. SercurityException C. IllegalArgumentException D. TooManyArgumentsException

Correct Answer: B,C

Question 2

Given:
interface Pet { }
class Dog implements Pet { }
public class Beagle extends Dog{ }

A. Dog d = new Beagle(); B. Pet a = new Dog(); C. Pet e = new Beagle(); D. Beagle c = new Dog(); E. Pet b = new Pet(); F. Dog f = new Pet();

Correct Answer: A,B,C

Question 3

A. Option B B. Option A C. Option D D. Option C

Correct Answer: D

Question 4

public class Test {
static String[][] arr =new String[3][];
private static void doPrint() {
//insert code here }
public static void main(String[] args) {
String[] class1 = {"A","B","C"};
String[] class2 = {"L","M","N","O"};
String[] class3 = {"I","J"};
arr[0] = class1;
arr[1] = class2;
arr[2] = class3;
Test.doPrint();
}
}

A. int i = 0;
for (String[] sub: arr) {
int j = sub.length -1;
for (String str: sub) {
System.out.println(str[j]);
i++;
}
} B. int i = 0;
for (String[] sub: arr[][]) {
int j = sub.length;
System.out.print(arr[i][j]);
i++;
} C. for (int i = 0;i < arr.length-1;i++) {
int j = arr[i].length-1;
System.out.print(arr[i][j]);
i++;
} D. private static void doPrint() {
for (int i = 0;i < arr.length;i++) {
int j = arr[i].length-1;
System.out.print(arr[i][j]);
}
}

Correct Answer: D

Question 5

class Sports {
int num_players;
String name, ground_condition;
Sports(int np, String sname, String sground){ num_players = np;
name = sname;
ground_condition = sground;
}
}
class Cricket extends Sports {
int num_umpires;
int num_substitutes;

A. Cricket() {
super.ground_condition = "Condition OK";
super.name="Cricket";
super.num_players = 11;
num_umpires =3;
num_substitutes=2;
} B. Cricket() {
this(3,2);
super(11, "Cricket", "Condidtion OK");
}
Cricket(int nu, ns) {
this.num_umpires =nu;
this.num_substitutes=ns;
} C. Cricket() {
this.num_umpires =3;
this.num_substitutes=2;
super(11, "Cricket", "Condidtion OK");
} D. Cricket() {
super(11, "Cricket", "Condidtion OK");
num_umpires =3;
num_substitutes=2;
}

Correct Answer: D

Question 6

A. line 6 replaced with handy.dandy.KeyStroke Stroke = new handy.dandy.KeyStroke(); B. import handy.dandy.*; added after line 1 C. import handy.dandy.KeyStroke.typeException(); added before line 1 D. import handy.*; added before line 1 E. line 6 replaced with handy.dandy.keystroke stroke = new KeyStroke ( ); F. line 6 replaced with handy.*.KeyStroke = new KeyStroke ( ); G. import handy.dandy,KeyStroke; added after line 1

Correct Answer: A,B,G

Question 7

Given:
public class SampleClass {
public static void main(String[] args) {
AnotherSampleClass asc = new AnotherSampleClass(); SampleClass sc = new SampleClass();
sc = asc;
System.out.println("sc: " + sc.getClass());
System.out.println("asc: " + asc.getClass());
}}
class AnotherSampleClass extends SampleClass {
}

A. sc: class SampleClass asc: class AnotherSampleClass B. sc: class AnotherSampleClass asc: class AnotherSampleClass C. sc: class Object asc: class AnotherSampleClass D. sc: class AnotherSampleClass asc: class SampleClass

Correct Answer: B

Question 8