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Which of these is a superclass of all exceptional type classes?
What exception thrown by parseInt() method?
What is the output of this program?
package pkg;
class output {
public static void main(String args[])
{
StringBuffer s1 = new StringBuffer(“Hello”);
s1.setCharAt(1, x);
System.out.println(s1);
}
}
What will be the output of the following Java code?
class A
{
public int i;
private int j;
}
class B extends A
{
void display()
{
super.j = super.i + 1;
System.out.println(super.i + ” ” + super.j);
}
}
class inheritance
{
public static void main(String args[])
{
B obj = new B();
obj.i=1;
obj.j=2;
obj.display();
}
}
Which of these is correct about passing an argument by call-by-value process?
Which of the below is not a memory leak solution?
Which of these class allows us to get real time data about private and protected
member of a class?
What should not be done to avoid deadlock?
What will be the output of the following Java program?
class A
{
int i;
void display()
{
System.out.println(i);
}
}
class B extends A
{
int j;
void display()
{
System.out.println(j);
}
}
class inheritance_demo
{
public static void main(String args[])
{
B obj = new B();
obj.i=1;
obj.j=2;
obj.display();
}
}
Which of the following matches end of the string using regular expression in java?
Predict the output of the following program.
class Test
{ int count = 0;
void A() throws Exception { try { count++;
try { count++;
try { count++; throw new Exception();
}
catch(Exception ex) { count++; throw new Exception(); } }
catch(Exception ex) { count++; } }
catch(Exception ex) { count++; }
}
void display() { System.out.println(count); }
public static void main(String[] args) throws Exception { Test obj = new Test(); obj.A(); obj.display(); } } |
What will be the output of the following Java code?
class multidimention_array
{
public static void main(String args[])
{
int arr[][] = new int[3][];
arr[0] = new int[1];
arr[1] = new int[2];
arr[2] = new int[3];
int sum = 0;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < i + 1; ++j)
arr[i][j] = j + 1;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < i + 1; ++j)
sum + = arr[i][j];
System.out.print(sum);
}
}
What will be the output of the following program?
enum Enums
{
A, B, C;
{
System.out.println(1);
}
static
{
System.out.println(2);
}
private Enums()
{
System.out.println(3);
}
}
public class MainClass
{
public static void main(String[] args)
{
Enum en = Enums.C;
}
}
This response will be reviewed and graded after submission.
What package is a part of the wrapper class which is imported by default into all Java programs?
class Boo
{
Boo(String s) { }
Boo() { }
}
class Bar extends Boo
{
Bar() { }
Bar(String s) {super(s);}
void zoo()
{
// insert code here
}
}
which one create an anonymous inner class from within class Bar?
Which constructs an anonymous inner class instance?
public class MyOuter
{
public static class MyInner
{
public static void foo() { }
}
}
which statement, if placed in a class other than MyOuter or MyInner, instantiates an instance of the nested class?
What will be the output of the program?
public abstract class AbstractTest
{
public int getNum()
{
return 45;
}
public abstract class Bar
{
public int getNum()
{
return 38;
}
}
public static void main (String [] args)
{
AbstractTest t = new AbstractTest()
{
public int getNum()
{
return 22;
}
};
AbstractTest.Bar f = t.new Bar()
{
public int getNum()
{
return 57;
}
};
System.out.println(f.getNum() + ” ” + t.getNum());
}
}
What will be the output of the following Java program?
class Output
{
public static void main(String args[])
{
Integer i = new Integer(257);
byte x = i.byteValue();
System.out.print(x);
}
}
What will be the output of the following Java code?
class array_output
{
public static void main(String args[])
{
int array_variable[][] = {{ 1, 2, 3}, { 4 , 5, 6}, { 7, 8, 9}};
int sum = 0;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3 ; ++j)
sum = sum + array_variable[i][j];
System.out.print(sum / 5);
}
}