Scanner in = new Scanner(System.in); int n = 5; ArrayListaddName = new ArrayList<>(); for(int i = 0; i < n; i++){ addName.add(in.nextLine()); }
Here is what the above code is Doing:
1. We are creating a scanner object to take input from the user.
2. We are creating an ArrayList of type String.
3. We are using a for loop to take input from the user.
4. We are using the add() method to add the input to the ArrayList.
File file = new File(“/path/to/file.txt”); PrintWriter writer = new PrintWriter(file); writer.print(“”); writer.close(); Here is what the above code is Doing: 1. Create a new File object with the path to the file you want to write to. 2. Create a new PrintWriter object with the File object as a parameter. 3. Call the print() method…
int divisiblenumber = 6; if(divisiblenumber % 2 == 0); print(“success”) Here is what the above code is Doing: 1. We create a variable called divisiblenumber and set it equal to 6. 2. We then check to see if divisiblenumber is divisible by 2. 3. If it is, we print “success”. The problem is that we…
String line = scann.nextLine(); String[] info = line.split(” “); for( String s : info) { System.out.println(s); } Here is what the above code is Doing: 1. It’s reading the file line by line. 2. It’s splitting the line into an array of strings. 3. It’s printing out each element of the array.
//Example for storing per-player scoresHashMap playerScores = new HashMap(); //Setting scoreplayerScores.put(player.getName(), score); Here is what the above code is Doing: 1. We create a new HashMap called playerScores. 2. We put the player’s name as the key and the score as the value. 3. We can then get the score by using the player’s name as…
float lerp(float point1, float point2, float alpha){ return point1 + alpha * (point2 – point1);} Here is what the above code is Doing: 1. We’re creating a function called lerp that takes three parameters: point1, point2, and alpha. 2. We’re returning the value of point1 + alpha * (point2 – point1).
import java.util.Collections; List myList = new ArrayList(); String[] myArray = new String[] {“Java”, “Util”, “List”}; Collections.addAll(myList, myArray); Here is what the above code is Doing: 1. Create a new ArrayList object and assign it to the variable myList. 2. Create a new String array object and assign it to the variable myArray. 3. Call the…