..• 4. You are given a string of length > 3. Print the middle 3 characters if the length is odd or the middle 2 characters if the length is even. ebook-bjeo-7-ch04-sec05-cc-2 JLTnys,java 1 import java.util.Scanner; 3 public class Strings 4 { public static void main(String[] args) { Scanner in = new Scanner(System.in); String word = in.next(); 9. String result System.out.println(result); } 10 11 12 13 } CodeCheck Reset

..• 4. You are given a string of length > 3. Print the middle 3 characters if the length is odd or the middle 2 characters if the length is even. ebook-bjeo-7-ch04-sec05-cc-2 JLTnys,java 1 import java.util.Scanner; 3 public class Strings 4 { public static void main(String[] args) { Scanner in = new Scanner(System.in); String word = in.next(); 9. String result System.out.println(result); } 10 11 12 13 } CodeCheck Reset

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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I need to write a program which allows me to input "3 Joe,123-5432 Linda,983-4123 Frank,867-5309 Frank" and output "867-5309". This is the code I have so far..." import java.util.Hashtable;import java.util.Scanner; public class Main {public static void main(String[] args) {// initialize Scanner classScanner sc = new Scanner(System.in);// initialize Hashtable// <String, String> tells java that both key and value will be of type StringHashtable<String, String> my_dict = new Hashtable<>(); // get the count of records to be entered// 1st part of the inputint n = sc.nextInt(); // execute for loop n times// 2nd part of the inputfor (int i = 0; i < n; i++) {// get a record from the user. example: Linda,983-4123String s = sc.next();// split the string on comma to get the name and code in an arrayString[] details = s.split(",");// get the nameString name = details[0];// get the codeString code = details[1]; // put the record in the dictionary// here name is key and code is…
What gets printed when the following program is compiled and run? class xyz { public static void main(String args[]) { int i,j,k; for (i = 0; i < 3; i++) { for(j=1; j < 4; j++) { for(k=2; k<5; k++) { if((i == j) && (j==k)) System.out.println(i); }}}}} a: 0 b: 1 c: 2 d: 3
Why am I getting errors? Says "Index 0 out of bounds for length 0" public static void main(String[] args) { System.out.println("Enter length and width of rectangle"); for (int i=0; i < args.length; i++) { System.out.println(args[i]); } Double area= Double.parseDouble (args[0]) * Double.parseDouble (args[1]); System.out.println(" Area of rectangle is :" + String.format("%.3f", area)); } }
Write a Java method splitName() that takes a string (that contains 1 word or more (space-separated)), split it into words, count the number of words, makes the first letter of each word capital, and display each modified word in a line.Write main() method that reads a full name (use nextLine() of the Scanner), removes eventual extra spaces, and makes all characters of the full name in lower case. Then, sends the name to splitName() method and displays the returned value.
: Write a java program that count the number of letters in a String and find the first occurrence of S, U, I, T in the String and return indices of S, U, I, T. Join the three initialized Strings string1, string2, and string3. Count the number of white spaces in the complete string. Use toUpperCase() and replaceAll("\\s", "") methods to convert string into Upper Case and remove all white Spaces from the string. Count the number of letters in the string. Find the first occurrence of S, U, I, T in the String and return indices of S, U, I, T. Strings are given below: String string1 = "Globalization and Information Technology continue to process at a dramatic pace" String string2 = "To answer the demand of a changing society Pakistan higher education system needs to shift its focus from individuals who simply absorb knowledge to those who are able to creatively utilize knowledge to excel in unfamiliar situations"; String string3 = "These creative individuals should be able to track…
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This is my code for step 1 below - need help import java.util.Scanner;//to readinputpublic class Main{ public static void main(String[] args) { String s1,s2,s3;//to store 3 names Scanner sc = new Scanner(System.in);//to read input //reading 3 names from user System.out.println("Enter three names :"); s1=sc.next(); s2=sc.next(); s3=sc.next(); System.out.println("Descending order:"); //printing 3 names, in descending order if(s1.compareTo(s2)>=0 && s2.compareTo(s3)>=0)//if s1>=s2>=s3 { System.out.println(s1+"\n"+s2+"\n"+s3); } else if(s1.compareTo(s3)>=0 && s3.compareTo(s2)>=0)//if s1>=s3>=s2 { System.out.println(s1+"\n"+s3+"\n"+s2); } else if(s2.compareTo(s1)>=0 && s1.compareTo(s3)>=0)//if s2>=s1>=s3 { System.out.println(s2+"\n"+s1+"\n"+s3); } else if(s2.compareTo(s3)>=0 && s3.compareTo(s1)>=0)//if s2>=s3>=s1 { System.out.println(s2+"\n"+s3+"\n"+s1); }…
Write a java program that reads in three strings and sorts them alphabetically. You can ask to enter 3 strings in three separate lines. It doesn't have to be one line. (USE IF STATMENTS OR SWITCH STATMENTS, NO LOOPS OR ARRAYS) Ex: Enter three strings: Charlie Able BakerStrings in order: Able Baker Charlie
in java String numValue is read from input. Output "Printed string: ", followed by numValue with a maximum of 7 characters, and then " is printed". End with a newline. Ex: If the input is rutabaga, then the output is: Printed string: rutabag is printed 1 2 3 4 5 6 7 8 9 10 11 12 13 import java.util.Scanner; public class StringFormatter { publicstaticvoidmain(String[] args) { Scannerscnr=newScanner(System.in); StringnumValue; numValue=scnr.next(); /* Your code goes here */ } }
Continuing from the example, modify the program so that it outputs the average grade in each course, and also shows which course has the highest average grade. import java.util.Scanner; public class Main { publicstaticvoid main(String[] args) { Scanner s = new Scanner(System.in); int numCourses, numTests; double[][] testScores; System.out.print("How many courses are you taking? "); numCourses = s.nextInt(); testScores = new double[numCourses][]; // allocate an array of references to 1-D arrays (rows) for(int i = 0; i < numCourses; i++) { System.out.print("How many tests are in course number " + (i+1) + "? "); numTests = s.nextInt(); // allocate this row: a 1-D array of doubles: testScores[i] = new double[numTests]; } for(int courseId=0; courseId < testScores.length; courseId++) { for(int testId=0; testId < testScores[courseId].length; testId++) { System.out.print("What was your grade on test " + (testId+1) + " for course " + (courseId+1) + "? ");…
Write a client program that loops around getting two fractions from the user,output their sum, and state whether or not they are equal. Keep looping until the first fraction entered is a zero fraction. import java.util.ArrayList;import java.util.Scanner; //Define the class Fractionclass Fraction{private int n, d;public Fraction(){//Initialize the valuesthis.n = this.d = 0;}public Fraction(int n, int d){//Initialize the variablesthis.n = n;this.d = d;}//Define the getter function getNum() that returns the numeratorpublic int getNum(){//Returns numeratorreturn n;}//Define the getter function getDen() that returns the denominatorpublic int getDen(){//Returns denominatorreturn d;}//Define the boolean function isZero() that returns 0 if numerator is 0 and denominator is not equals to zeropublic boolean isZero(){return(getNum() == 0 && getDen() != 0);}public boolean isequals(Object c){Fraction f = (Fraction) c;return(Integer.compare(n,f.n))==0 &&…
This is the question I am struggling with - Write a program that inserts parentheses, a space, and a dash into a string of 10 user-entered numbers to format it as a phone number. For example, 5153458912 becomes (515) 345-8912. If the user does not enter exactly 10 digits, display an error message. Continue to accept user input until the user enters 999. This is what I am given - import java.util.*; public class PhoneNumberFormat { public static void main(String[] args) { // Write code here } }