Which of these method of DatagramPacket is used to find the port number?
Which of these occupy first 0 to 127 in Unicode character set used for characters in Java?
What is the output of this program?
1.class output {
2.public static void main(String args[]) {
3.StringBuffer sb=new StringBuffer("Hello");
4.sb.replace(1,3,"Java");
5.System.out.println(sb);
6.}
7.}
Which of the following operators can operate on a boolean variable? && == ?:
+=
What is the output of this program?
1.class operators {
2.public static void main(String args[])
3.{
4.int var1 = 5;
5.int var2 = 6;
6.int var3;
7.var3 = ++ var2 * var1 / var2 + var2;
8.System.out.print(var3);
9.}
10.}
What is the output of this program?
1.import java.util.*;
2.class vector {
3.public static void main(String args[]) {
4.Vector obj = new Vector(4,2);
5.obj.addElement(new Integer(3));
6.obj.addElement(new Integer(2));
7.obj.addElement(new Integer(5)); 8.System.out.println(obj.capacity());
9.}
10.}
What is the output of this program?
1.class isinfinite_output {
2.public static void main(String args[]) {
3.Double d = new Double(1 / 0.);
4.boolean x = d.isInfinite();
5.System.out.print(x);
6.}
7.}
What is the output of this program?
1.import java.util.*;
2.class Array {
3.public static void main(String args[]) {
4.int array[] = new int [5];
5.for (int i = 5; i > 0; i--)
6.array[5-i] = i;
7.Arrays.fill(array, 1, 4, 8);
8.for (int i = 0; i < 5 ; i++)
9.System.out.print(array[i]);
10.}
11.}
What is the output of this program, if we run as “java main_arguments 1 2 3”? 1.class main_arguments {
2.public static void main(String [] args)
3. {
4.String [][] argument = new String[2][2];
5.int x;
6.argument[0] = args;
7.x = argument[0].length;
8.for (int y = 0; y < x; y++)
9.System.out.print(" " + argument[0][y]);
10.}
11.}
What is the output of this program?
1.package pkg;
2.class output {
3.public static void main(String args[])
4.{
5.StringBuffer s1 = new StringBuffer("Hello World");
6.s1.insert(6 , "Good ");
7.System.out.println(s1);
8.}
9.}
What is the output of this program? 1.class area {
2.public static void main(String args[])
3.{
4.double r, pi, a;
5.r = 9.8;
6.pi = 3.14;
7.a = pi * r * r;
8.System.out.println(a);
9.}
10.}
Which of these classes implements Set interface?
What is the output of this program?
1.class String_demo {
2. public static void main(String args[])
3.{
4.char chars[] = {'a', 'b', 'c'};
5.String s = new String(chars);
6.System.out.println(s);
7.}
8.}
What is the output of this program?
1.class Output {
2.public static void.main(String args[])
3.{
4.int a = 5;
5.int b = 10;
6.first: {
7.second: {
8.third: {
9.if (a == b >> 1)
10.break second;
11.}
12.System.out.println(a);
13.}
14.System.out.println(b);
15.}
16.}
17.}
Which of these classes implements Set interface?
What is the output of this program?
1.class Output {
2.public static void main(String args[])
3.{
4.final int a=10,b=20;
5.while(a
Which of the following statements are incorrect?
What is the output of this program? 1.class asciicodes {
2.public static void main(String args[])
3.{
4.char var1 = 'A';
5.char var2 = 'a';
6.System.out.println((int)var1 + " " + (int)var2);
7.}
8.}
What is the process of defining more than one method in a class differentiated by method signature?
Which of these method of InputStream is used to read integer representation of next available byte input?
Literal can be of which of these data types?
Which of these methods is used to add elements in vector at specific location?
Which of the following package stores all the simple data types in java?
What is the output of this program?
1.class test {
2.int a;
3.int b;
4.test(int i, int j) {
5.a = i;
6.b = j;
7.}
8.void meth(test o) {
9.a *= 2;
10.O.b /= 2;
11.}
12.}
13.class Output {
14.public static void main(String args[])
15.{
16.test obj = new test(10 , 20);
17.obj.meth(obj);
18.System.out.println(obj.a + " " + obj.b);
19.}
20.}
Which of these methods is used to compare a specific region inside a string with another specific region in another string?
What is the output of this program?
1.class overload {
2.int x;
3.int y;
4.void add(int a){
5.x = a + 1;
6.}
7.void add(int a , int b){
8.x = a + 2;
9.}
10.}
11.class Overload_methods {
12.public static void main(String args[])
13.{
14.overload obj = new overload();
15.int a = 0;
16.obj.add(6, 7);
17.System.out.println(obj.x);
18.}
19.}
What is the output of this program?
1.class jump_statments {
2.public static void main(String args[])
3.{
4.int x = 2;
5.int y = 0;
6.for ( ; y < 10; ++y) {
7.if (y % x == 0)
8.continue;
9.else if (y == 8)
10.break;
11.else
12.System.out.print(y + " ");
13.}
14.}
15.}
Which of these values can a boolean variable contain?
Which of these methods of httpd class is used to read data from the stream?
Which of these method of Object class can clone an object?
Which of these is wrapper around everything associated with a reply from an http server?
What is the output of this program?
1.import java.util.*;
2.class hashtable {
3.public static void main(String args[]) {
4.Hashtable obj = new Hashtable();
5.obj.put("A", new Integer(3));
6.obj.put("B", new Integer(2));
7.obj.put("C", new Integer(8));
8.System.out.print(obj.contains(new Integer(5)));
9.}
10.}
Which of these class is used to read and write bytes in a file?
What will s2 contain after following lines of code?
String s1 = “one”;
String s2 = s1.concat(“two”)
What is the output of this program?
1.import java.util.*;
2.class vector {
3.public static void main(String args[]) {
4.Vector obj = new Vector(4,2);
5.obj.addElement(new Integer(3));
6.obj.addElement(new Integer(2));
7.obj.addElement(new Integer(5)); 8.System.out.println(obj.capacity());
9.}
10.}
Which of these method Map class is used to obtain an element in the map having specified key?
Which of these methods is used to know the full URL of an URL object?
Which operator is used to invert all the digits in binary representation of a number?
What is the value returned by unction compareTo() if the invoking string is less than the string compared?
Which of these is a super class of wrappers Long, Character & Integer?