"வணக்கம், அமிகோ! போதும் குழப்பம்! இதோ உங்கள் பணிகள். முந்தையதை விட அவை கடினமாக இருக்கும், மேலும் அவை உங்கள் செயலியை மேம்படுத்துவது உறுதி. அது நிச்சயமாக எங்களுக்குத் தேவைப்படும் ஒன்று. நீங்கள் சிரமங்களை எதிர்கொண்டால், உங்கள் சகாக்களுடன் சரிபார்க்கவும். அவர்கள் நிச்சயமாக உதவுவார்கள்."
"நீங்கள் ஏற்கனவே எல்லாவற்றையும் செய்திருக்கிறீர்களா? சரி, இன்னும் கடினமான சில பயிற்சிகள் இங்கே உள்ளன:"
20
பணி
Java Core, நிலை 9, பாடம் 11
Tracking changes
Read 2 file names from the console: file1 and file2.
Both files contain text, but file2 is an updated version of file1. Some of the lines are still the same.
You need to create a merged version of the lines by writing them to the lines list.
The ADDED and REMOVED labels can't be used consecutively—t
20
பணி
Java Core, நிலை 9, பாடம் 11
Your own FileWriter
Implement FileConsoleWriter's logic.
The FileConsoleWriter class must have a private FileWriter field called fileWriter.
The FileConsoleWriter class must have every constructor used to initialize fileWriter for writing.
The FileConsoleWriter class must have five write methods and one close method:
-
20
பணி
Java Core, நிலை 9, பாடம் 11
Introducing tags
Read from the console the name of a file containing HTML.
Example:
Info about Leela Leela Turanga
Supergirl
The main method's first parameter is a tag name. For example, "span".
Display all tags that match the speci
12
பணி
Java Core, நிலை 9, பாடம் 11
Calculating salaries
The first parameter of the main method is a file name.
Each line of the specified file has the following format:
name value
where [name] is a String and [value] is a double. [name] and [value] are separated by a space.
Find the sum of all the values for each name.
Display all the data, sorted by na
12
பணி
Java Core, நிலை 9, பாடம் 11
The richest
The first parameter of the main method is a file name.
Each line of the specified file has the following format:
name value
where [name] is a String and [value] is a double. [name] and [value] are separated by a space.
Find the sum of all the values for each name.
Display in alphabetical order the
20
பணி
Java Core, நிலை 9, பாடம் 11
John Johnson
The first parameter of the main method is a file name.
Each line of the specified file has the following format:
name month day year
where [name] is a String that can contain several words separated by spaces.
[month] is an int, [day] is an int, and [year] is an int.
The data is separated by spaces.
12
பணி
Java Core, நிலை 9, பாடம் 11
Searching for the right lines
Read a file name from the console.
Display all of the file's lines that contain only 2 words in the words list.
Close the streams.
Example: words contains the words A, B, and C
Lines:
C B A D // 3 words from words, rejected
A B A D // 3 words from words, rejected
D A D // 1 word from words, rejecte
12
பணி
Java Core, நிலை 9, பாடம் 11
Words with numbers
The main method's first parameter is file1 and the second is file2.
file1 contains lines with words separated by spaces.
Write to file2 all the words that contain numbers, for example, a1 or abc3d. Separate the words with spaces.
Close the streams.
20
பணி
Java Core, நிலை 9, பாடம் 11
Replacing numbers
1. In a static block, initialize map with (number, word) pairs from 0 to 12 inclusive.
For example, (0, "zero"), (1, "one"), (2, "two")
2. Read the file name from the console, and then read the contents of the file.
3. Use map to replace all of the numbers with words.
4. Display the result.
5. Close
12
பணி
Java Core, நிலை 9, பாடம் 11
Long words
The main method's first parameter is file1 and the second is file2.
file1 contains words separated by spaces.
Write to file2 a comma-separated list of words longer than 6 characters.
file2 should not end with a comma.
Close the streams.
Example output to file2:
lengthy,shortened,abbreviation
12
பணி
Java Core, நிலை 9, பாடம் 11
Mirror image
1. Read a file name from the console. Read the contents of the file.
2. For each line in the file:
2.1. reverse the order of all characters.
2.2. display the result.
3. Close the streams.
Example input file:
I'm a programmer.
Amigo
Example result:
.remmargorp a m'I
ogimA
12
பணி
Java Core, நிலை 9, பாடம் 11
Contextual advertising
Replace the System.out object in the main method with your own reader wrapper.
Your reader wrapper should display a contextual ad after every other call to println.
Call testString's existing printSomething() method.
Restore the System.out variable back to the original stream.
Ad text: "CodeGym - o
12
பணி
Java Core, நிலை 9, பாடம் 11
Correct the bug. Classes and interfaces
This program has just 1 logical error. Find and fix it.