Oracle Java Programming Certification Questions and Answers (Dumps and Practice Questions)

Question : You have been given following code

public class MainMethod {
void main() {
System.out.println("one");
}

static void main(String args) {
System.out.println("two");
}

public static void main(String[] args) {
System.out.println("three");
}

void mina(object[] args) {
System.out.println("four");
}
}

What is printed out when the program is excuted?


1. one
2. two
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4. four



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Question : You have been given following code

int var1 = -5;
int var2 = var1--;
int var3 = 0;
if (var2 <lt; 0) {
var3 = var2++;
} else {
var3 = --var2;
}
System.out.println(var3);

What is the result?



1. -6
2. -4
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4. 5

5. 4



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Explanation:

Explanation:




Question : You have been given below code

public class FieldInit {
char c;
boolean b;
float f;

void printAll() {
System.out.println("c = " + c);
System.out.println("c = " + b);
System.out.println("c = " + f);
}

public static void main(String[] args) {
FieldInit f = new FieldInit();
f.printAll();
}
}

What would be result ?


1. c = null
b = false
f = 0.0F
2. c = 0
b = false
f = 0.0f
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b = true
f = 0.0
4. c =
b = false
f = 0.0




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Related Questions

---

Question : Given the for loop construct:

for ( expr1 ; expr2 ; expr3 ) {
statement;
}

Which two statements are true?
A. This is not the only valid for loop construct; there exits another form of for loop constructor.
B. The expression expr1 is optional. it initializes the loop and is evaluated once, as the loop begin.
C. When expr2 evaluates to false, the loop terminates. It is evaluated only after each iteration through the loop.
D. The expression expr3 must be present. It is evaluated after each iteration through the loop


1. A,B
2. B,C
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4. A,D
5. A,C





Question : You have been given following code

class Overloading {
int x(double d) {
System.out.println("one");
return 0;
}

String x(double d) {
System.out.println("two");
return null;
}

double x(double d) {
System.out.println("three");
return 0.0;
}

public static void main(String[] args) {
new Overloading().x(4.0);
}
}

What is the result?


1. One
2. Two
3. Access Mostly Uused Products by 50000+ Subscribers
4. Compilation fails






Question : :You have been given following code

public class Test {
public static void main(String[] args) {
try {
String[] arr = new String[4];
arr[1] = "Unix";
arr[2] = "Linux";
arr[3] = "Solarios";
for (String var : arr) {
System.out.print(var + " ");
}
} catch (Exception e) {
System.out.print(e.getClass());
}
}
}

What is the result?


1. Unix Linux Solaris
2. Null Unix Linux Solaris
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4. Class java.lang.NullPointerException




Question : Which of the following exception will be thrown due to the statement given here?
int array[]= new int[-2];



1. NullPointerException
2. NegativeArraySizeException
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4. IndexOutOfBoundsException
5. This statement does not cause any exception




Question : You have been given following code snippet

float x = 22.00f % 3.00f;
int y = 22 % 3;
System.out.print(x + ", " + y);

What is the result?



1. 1.0, 1
2. 1.0f, 1
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4. Compilation fails
5. An exception is thrown at runtime




Question : You have been given following code

package p1;

public class Test {
static double dvalue;
static Test ref;

public static void main(String[] args) {
System.out.println(ref);
System.out.println(dvalue);
}
}

What is the result?



1. p1.Test.class 0.0
2. 0.000000
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4. Compilation fails
5. A NullPointerException is thrown at runtime