NPTEL Programming In Java Assignment 8 Answers 2022:- All the Answers provided here to help the students as a reference, You must submit your assignment at your own knowledge
What is Programming In Java?
With the growth of Information and Communication Technology, there is a need to develop large and complex software. Further, that software should be platform-independent, Internet-enabled, easy to modify, secure, and robust. To meet this requirement object-oriented paradigm has been developed and based on this paradigm the Java programming language emerges as the best programming environment. Now, the Java programming language is being used for mobile programming, Internet programming, and many other applications compatible with distributed systems. This course aims to cover the essential topics of Java programming so that the participants can improve their skills to cope with the current demand of IT industries and solve many problems in their own field of studies.
CRITERIA TO GET A CERTIFICATE
Average assignment score = 25% of the average of the best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100
Final score = Average assignment score + Exam score
YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF THE AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.
Below you can find the answers for NPTEL Programming In Java Assignment 8
NPTEL Programming In Java Assignment 8 Answers 2022 {July – Dec}
1. Which of the following is NOT a class of java.awt package?
a. Button
b. Component
c. Dialog
d. Paint
Answer:- d
2. Which of the following is/are NOT an exception of java.awt package?
a. AWTEror
b. AWTException
c. FontFormatException
d. all of these
Answer:- a
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3. Which of the following method is/are a class button of java.awt package?
a. paint(Graphics g)
b. setLabel(String label)
c. getCurent()
d. getltem(int index)
Answer:- b
4. Which of the following container does not contain titlebar and menubar 2?
a. window
b. panel
c. container
d. frame
Answer:- b
5. Which package provides many event classes and Listener interfaces for event handling?
a. java.awt.activeevent
b. java.awt.event
C. java.awt.listener
d. none of these
Answer:- b
6. What is the name of the method used to get the current font of an graphic in java.awt.graphies?
a. abstract FontMetrics getFontMetrics(Font f)
b. abstract Font getFont()
C. FontMetrics getFontMetrics()
d. None of these
Answer:- b
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7. Which of the following method remove all items from scrolling list in java.awt.list?
a. hide()
b. clear()
C. remove()
d. None
Answer:- b
8. Which of the following statement is true about the update) in java.awt package?
a. Sets the color of the graphics context to be the foreground color of this component.
b. Calls this component’s paint method to completely redraw this component.
c. Clears this component by filling it with the background color.
d. All of these.
Answer:- d
9. Which of the following methods can be used to return the current size size of a java.awt.Component object?
a. dimension()
b. setSize()
C. area()
d. size()
e. resize(0
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10. When we invoke update () for a java.awt.Component object, the A\VT invokes which of the following method?
a. show()
b. draw)
c. paint()
d. repaint0
Answer:- c
Programming Assignment
Q1. Write a program which will print a pyramid of “*” ‘s of height “n” and print the number of “*” ‘s in the pyramid.
Code:-
import java.util.*;
public class Pattern1 {
public static void main(String[] args) {
Scanner inr = new Scanner(System.in);
int n = inr.nextInt();
int a15 = 0,SuM=0;
for(int z = 1; z <= n; ++z, a15 = 0)
{
for(int space = 1; space <= n - z; ++space)
{
System.out.print(" ");
}
while(a15 != 2 * z - 1) {
System.out.print("* ");
SuM+=1;
++a15;
}
System.out.println();
}
System.out.println(SuM);
}
}
Q2. Write a program which will print a pascal pyramid of “*” ‘s of height “l” .
Code:-
import java.util.*;
public class Pattern2 {
public static void main(String[] args) {
Scanner inr = new Scanner(System.in);
int l = inr.nextInt();
int e,c;
int space=l-1;
for(e=0;e< l;e++)
{
for(c=0;c< space;c++)
{
System.out.print(" ");
}
for(c=0;c<=e;c++)
{
System.out.print("* ");
}
System.out.print("\n");
space--;
}
}
}
Q3. Write a program which will print a pyramid of “numbers” ‘s of height “n” and print the sum of all number’s in the pyramid.
Code:-
import java.util.*;
public class Pattern3 {
public static void main(String[] args) {
Scanner inr = new Scanner(System.in);
int n = inr.nextInt();
int flage= 1,sum_is=0;
for(int c = 1; c <= n; ++c, flage = 1)
{
for(int space = 1; space <= n-c; ++space) {
System.out.print(" ");
}
while(flage <= 2 * c - 1)
{
System.out.print(flage+" ");
sum_is+=flage;
++flage;
}
System.out.println();
}
System.out.println(sum_is);
}
} Q4. Write a program to print symmetric Pascal’s triangle of “*” ‘s of height “l” of odd length . If input “l” is even then your program will print “Invalid line number”.
Code:-
import java.util.*;
public class Pattern4 {
public static void main(String[] args) {
Scanner inr = new Scanner(System.in);
int l = inr.nextInt();
int UperL=0;
int lowerl=0;
if (l%2!=0)
{
UperL =(l/2)+1;
lowerl=l-UperL;
for(int d=1;d<=UperL; d++)
{
for(int s=1;s<=(UperL-d); s++)
{
System.out.print(" ");
}
for(int j=1;j<=d; j++){
System.out.print("* ");
}
System.out.println();
}
int c=lowerl;
for(int p=1;p<=lowerl; p++)
{
for(int s=c;s<lowerl; s++)
{
System.out.print(" ");
}
for(int q=1;q-1<=lowerl-p; q++)
{
System.out.print(" *");
}
c--;
System.out.println();
}
}
else
{
System.out.print("Invalid line number");
}
}
}
Q5. Write a program to display any digit(n) from 0-9 represented as a “7 segment display”.
Code:-
import java.util.*;
public class Pattern5 {
public static void main(String[] args) throws Exception {
Scanner inr = new Scanner(System.in);
int n = inr.nextInt();
printDigit(n);
}
private static final Map<Integer, Integer> end =
new HashMap<Integer, Integer>();
static {
end.put(0, 0x7E);
end.put(1, 0x30);
end.put(2, 0x6D);
end.put(3, 0x79);
end.put(4, 0x33);
end.put(5, 0x5B);
end.put(6, 0x5F);
end.put(7, 0x70);
end.put(8, 0x7F);
end.put(9, 0x7B);
}
public static void printDigit(int digit) {
int code = encode(digit);
char[] bits =
String.format("%7s", Integer.toBinaryString(code))
.replace(' ', '0').toCharArray();
lightSegmentArrange(bits[0] == '1', " _ \n", " \n");
lightSegmentArrange(bits[5] == '1', "|", " ");
lightSegmentArrange(bits[6] == '1', "_", " ");
lightSegmentArrange(bits[1] == '1', "|\n", " \n");
lightSegmentArrange(bits[4] == '1', "|", " ");
lightSegmentArrange(bits[3] == '1', "_", " ");
lightSegmentArrange(bits[2] == '1', "|\n", " \n");
}
private static void lightSegmentArrange(boolean on, String onValue, String offValue) {
System.out.print(on ? onValue : offValue);
try {
Thread.sleep(0);
}
catch (InterruptedException e) {
e.printStackTrace();
}
}
private static int encode(int digit) {
return end.containsKey(digit) ? end.get(digit) : 0x00;
}
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NPTEL Programming In Java Assignment 8 Answers 2022:-
Q1. Write a program which will print a pyramid of “*” ‘s of height “n” and print the number of “*” ‘s in the pyramid.
Code:-
import java.util.*;
public class Pattern1 {
public static void main(String[] args) {
Scanner inr = new Scanner(System.in);
int n = inr.nextInt();
// Add the necessary code in the below space
int k = 0,sum=0;
for(int i = 1; i <= n; ++i, k = 0) {
for(int space = 1; space <= n - i; ++space) {
System.out.print(" ");
}
while(k != 2 * i - 1) {
System.out.print("* ");
sum=sum+1;
++k;
}
System.out.println();
}
System.out.println(sum);
}
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Q2. Write a program which will print a pascal pyramid of “*” ‘s of height “l” .
Code:-
import java.util.*;
public class Pattern2 {
public static void main(String[] args) {
Scanner inr = new Scanner(System.in);
int l = inr.nextInt();
// Add the necessary code in the below space
int i,j;
int space=l-1;
/*run loop (parent loop) till number of rows*/
for(i=0;i< l;i++)
{
/*loop for initially space, before star printing*/
for(j=0;j< space;j++)
{
System.out.print(" ");
}
for(j=0;j<=i;j++)
{
System.out.print("* ");
}
System.out.print("\n");
space--; /* decrement one space after one row*/
}
}
}Q3. Write a program which will print a pyramid of “numbers” ‘s of height “n” and print the sum of all number’s in the pyramid.
Code:-
import java.util.*;
public class Pattern3 {
public static void main(String[] args) {
Scanner inr = new Scanner(System.in);
int n = inr.nextInt();
// Add the necessary code in the below space
int k = 1,sum=0;
for(int i = 1; i <= n; ++i, k = 1) {
for(int space = 1; space <= n-i; ++space) {
System.out.print(" ");
}
while(k <= 2 * i - 1) {
System.out.print(k+" ");
sum=sum+k;
++k;
}
System.out.println();
}
System.out.println(sum);
}
}Q4. Write a program to print symmetric Pascal’s triangle of “*” ‘s of height “l” of odd length . If input “l” is even then your program will print “Invalid line number”.
Code:-
import java.util.*;
public class Pattern4 {
public static void main(String[] args) {
Scanner inr = new Scanner(System.in);
int l = inr.nextInt();
// Add the necessary code in the below space
int ul=0; // Upper Line
int ll=0; // Lower Line
// Check whether line number is odd
if (l%2!=0){
ul=(l/2)+1;
ll=l-ul;
//Code for upper half
for(int i=1;i<=ul; i++){
//Space management
for(int s=1;s<=(ul-i); s++){
System.out.print(" ");
}
// Star management
for(int j=1;j<=i; j++){
System.out.print("* ");
}
System.out.println();
}
//Code for lower half
int llc=ll;
for(int i=1;i<=ll; i++){
//Space management
for(int s=llc;s<ll; s++){
System.out.print(" ");
}
// Star management
for(int j=1;j-1<=ll-i; j++){
System.out.print(" *");
}
llc--;
System.out.println();
}
}
else{
System.out.print("Invalid line number");
}
}
}Q5. Write a program to display any digit(n) from 0-9 represented as a “7 segment display”.
Code:-
import java.util.*;
public class Pattern5 {
private static final Map<Integer, Integer> encodings =
new HashMap<Integer, Integer>();
static {
encodings.put(0, 0x7E);
encodings.put(1, 0x30);
encodings.put(2, 0x6D);
encodings.put(3, 0x79);
encodings.put(4, 0x33);
encodings.put(5, 0x5B);
encodings.put(6, 0x5F);
encodings.put(7, 0x70);
encodings.put(8, 0x7F);
encodings.put(9, 0x7B);
}
public static void printDigit(int digit) {
int code = encode(digit);
char[] bits =
String.format("%7s", Integer.toBinaryString(code))
.replace(' ', '0').toCharArray();
lightSegment(bits[0] == '1', " _ \n", " \n");
lightSegment(bits[5] == '1', "|", " ");
lightSegment(bits[6] == '1', "_", " ");
lightSegment(bits[1] == '1', "|\n", " \n");
lightSegment(bits[4] == '1', "|", " ");
lightSegment(bits[3] == '1', "_", " ");
lightSegment(bits[2] == '1', "|\n", " \n");
}
private static void lightSegment(boolean on, String onValue, String offValue) {
System.out.print(on ? onValue : offValue);
try {
Thread.sleep(0);
}
catch (InterruptedException e) {
e.printStackTrace();
}
}
private static int encode(int digit) {
return encodings.containsKey(digit) ? encodings.get(digit) : 0x00;
}
public static void main(String[] args) throws Exception {
Scanner inr = new Scanner(System.in);
int n = inr.nextInt();
printDigit(n);
}
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Disclaimer:- We do not claim 100% surety of solutions, these solutions are based on our sole expertise, and by using posting these answers we are simply looking to help students as a reference, so we urge do your assignment on your own.
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Programming In Java Assignment 8 Answers 2022:- All the Answers provided here to help the students as a reference, You must submit your assignment at your own knowledge
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