6.6 LAB: File name change Instructor note: You can easily replace a portion of text within a String using the String method "replace()". For example: String svar = "raspberry jam"; svar = svar.replace("jam", "pie"); System.out.println(svar); will print out: raspberry pie A photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a program that reads the name of a text file containing a list of photo file names. The program then reads the photo file names from the text file, replaces the "_photo.jpg" portion of the file names with "_info.txt", and outputs the modified file names. Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output. Ex: If the input of the program is: ParkPhotos.txt and the contents of ParkPhotos.txt are: Acadia2003_photo.jpg AmericanSamoa1989_photo.jpg BlackCanyonoftheGunnison1983_photo.jpg CarlsbadCaverns2010_photo.jpg CraterLake1996_photo.jpg GrandCanyon1996_photo.jpg IndianaDunes1987_photo.jpg LakeClark2009_photo.jpg Redwood1980_photo.jpg VirginIslands2007_photo.jpg Voyageurs2006_photo.jpg WrangellStElias1987_photo.jpg the output of the program is: Acadia2003_info.txt AmericanSamoa1989_info.txt BlackCanyonoftheGunnison1983_info.txt CarlsbadCaverns2010_info.txt CraterLake1996_info.txt GrandCanyon1996_info.txt IndianaDunes1987_info.txt LakeClark2009_info.txt Redwood1980_info.txt VirginIslands2007_info.txt Voyageurs2006_info.txt WrangellStElias1987_info.txt
Control structures
Control structures are block of statements that analyze the value of variables and determine the flow of execution based on those values. When a program is running, the CPU executes the code line by line. After sometime, the program reaches the point where it has to make a decision on whether it has to go to another part of the code or repeat execution of certain part of the code. These results affect the flow of the program's code and these are called control structures.
Switch Statement
The switch statement is a key feature that is used by the programmers a lot in the world of programming and coding, as well as in information technology in general. The switch statement is a selection control mechanism that allows the variable value to change the order of the individual statements in the software execution via search.
6.6 LAB: File name change
You can easily replace a portion of text within a String using the String method "replace()". For example:
String svar = "raspberry jam"; svar = svar.replace("jam", "pie"); System.out.println(svar);will print out:
raspberry pieA photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a
Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output.
Ex: If the input of the program is:
ParkPhotos.txtand the contents of ParkPhotos.txt are:
Acadia2003_photo.jpg AmericanSamoa1989_photo.jpg BlackCanyonoftheGunnison1983_photo.jpg CarlsbadCaverns2010_photo.jpg CraterLake1996_photo.jpg GrandCanyon1996_photo.jpg IndianaDunes1987_photo.jpg LakeClark2009_photo.jpg Redwood1980_photo.jpg VirginIslands2007_photo.jpg Voyageurs2006_photo.jpg WrangellStElias1987_photo.jpgthe output of the program is:
Acadia2003_info.txt AmericanSamoa1989_info.txt BlackCanyonoftheGunnison1983_info.txt CarlsbadCaverns2010_info.txt CraterLake1996_info.txt GrandCanyon1996_info.txt IndianaDunes1987_info.txt LakeClark2009_info.txt Redwood1980_info.txt VirginIslands2007_info.txt Voyageurs2006_info.txt WrangellStElias1987_info.txt![LAB
ACTIVITY
6.6.1: LAB: File name change
Downloadable files
ParkPhotos.txt
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1 import java.util.Scanner;
2 import java.io.FileInputStream;
3 import java.io.IOException;
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LabProgram.java
5 public class LabProgram {
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public static void main(String[] args) throws IOException {
Scanner scnr = new Scanner (System.in);
/* Type your code here. */
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