There are three components of the Java programming process: a task, solution, and answer. Still, newbies to programming face many issues occurred while working with the software. For instance, they can experience the wrong implementation that leads to bugs in programs. To avoid this, computing science students ask more experienced ones, “Could you please help me to do my Java homework?” and take it as a template for further Java projects. In our article, a young specialist can find out the main software issues they can meet in Java code and the ways of its improvement.
1. Understanding the issue statement.
Before starting to solve a problem, students need to understand what they want to do with it. The goal is to develop a working code that solves an issue. The understanding process is a big leap that takes a lot of time to go through the problem. The problem statement should be clear and tell how to do things. You can refine the problem by asking the teacher, team-lead, or customer and figure out what exactly you need to do.
2. Solve small instances by hand.
When you are assigned to calculate the shape perimeter, you need to train with simple data first. You don’t want to start with the multi-digit numbers, instead, you just work through a very small instance. Take a look at simple projects and see how you can make your task more manageable.
3. Write a step-by-step plan.
To not miss crucial parts of the algorithm, you need to note the exact steps of what you’ve done and what you need to do. Solving more general cases, you can lose your direction. Therefore, you should specify how to come up with your answer. There are several categories you might face issues programming software in Java:
- Fundamental Java syntax and semantics problems
- Inserting an operator that doesn’t apply.
- Applying incompatible types.
- Losing precision during conversion.
- Performing an impossible cast.
- Using scoping incorrectly.
- Strings in Java issues
- Reversing a given string in place.
- Printing duplicate characters from a string.
- Finding all the string permutations.
- Tracking if two strings are anagrams of each other
- Reversing a given string using recursion.
- The way to check if a string contains only digits.
- Сounting the number of vowels and consonants in a given string.
- Finding duplicate characters in a given string.
- Сounting the occurrence of a given character in a string.
- Printing the first non-repeated character from a string.
- Converting a given String into int like the atoi().
- Reversing words in a given sentence without using any library method.
- Checking if two strings are a rotation of each other.
- Analyzing if a given string is a palindrome.
- Finding the length of the longest substring without repeating characters.
- Finding the longest palindromic substring in given str.
- Converting a byte array to string.
- Removing the duplicate character from the string.
- Finding the maximum occurring character in a given string.
- Removing a given character from the string.
- Strains with CSV (Comma Separated Values) files and basic statistics in Java
- Using Apache Commons CSV.
- Devising algorithm to work with CSV data.
- Implementing in Java with Commons CSV.
- Visualizing, finding information, and trends with spreadsheets.
- Managing portable data in CSV format between different spreadsheets programs.
- Finding standards in common formats: IETF RFC 4180: CSV; ISO/IEC29500: Open Office XML.
- Using existing library: Apache CSVParser.
Luckily, all these and many other issues are answered on the Java67 source. It is a platform where experienced programmers share their skills gained from online courses, books, and various technology platforms. Here developers can learn how to code and make this process a piece of art.
4. Maintain domain knowledge.
If you are trying to solve a Java programming issue related to statistics, but you don’t know the statistics formulas involved, then no amount of programming expertise could be helpful. You need to consult an extras source such as Wikipedia, statistics textbook, article, or tutor to understand before solving your programming problem.
5. Find patterns.
At this step, a student should develop an algorithm for any instance of a problem. After you know the logical chain of actions you wrote in the step-by-step plan, you can see the repeatable patterns for each operation. Think about repetition, conditions, and values. When you see how many times you are doing the same actions, you can move to looping constructs. Relying on conditions, you can understand whether you do some action or not. If you have values and use a particular number that was a part of the input, think about why you use them.
6. Check an algorithm on practice.
When you’ve just come up with a general algorithm, you can still make mistakes in a particular case. If you left a value that was particular to the parameters, find this before translating an algorithm into code. Check these lack parts with one or more different inputs, which are going to be of sizes that are manageable to do by hand. Try it on smaller input first.
7. Translate to code.
Finally, programmers can proceed with one of the most expected steps. This is where Java is going to come into play. Consequently, take an algorithm you’ve prepared and express it in the syntax of Java. To find out more about syntax fundamentals, it is the best option to enroll for the course “Java Programming: Solving Problems with Software” by Duke University at Coursera learning platform.
8. Run test cases.
Now you can execute a program and see whether you get the right answer with Java based on what you’ve expected the correct answer to be knowing what problem you’re trying to solve. Every time developers run a test case, and if it passes, they are more confident in the program. If it fails, computing specialists know something is wrong with the code, so they move to the next step.
9. Provide the improvements.
Debugging failed test cases is a vital part of every programming solving issue. Mostly, experienced programmers use the scientific method. It helps them to understand where the problem is. Ultimately, if you have an algorithmic problem, you should return to the fifth point of finding patterns and fix them. Otherwise, if you have an implementation problem, return to the seventh point and correct the translation of your algorithm to code.
These nine steps you can use as a beginner developer to solve software programming problems made with Java language. They will help you throughout examples in your further educational projects and career.