You can’t assign a float value to an int variable because some of the information will be lost. For the same reason, you can’t pass a float value to a method whose argument is declared as an int. (your question is rather unclear due to the incorrect use of terminology, but I think you are … Read more
To count all the values where the first three digits equals the last three digits. (As you solution suggests) You can calculate the range for i4, i5 and the value i6 which makes this much faster. int count = 0; for (int i1 = 0; i1 <= 9; i1++) { for (int i2 = 0; … Read more
This has tripped people up more than once. Doors are two-component items. ACACIA_DOOR represents the top-part of the door, while ACACIA_DOOR_ITEM represents the bottom-part and also the item id. Use ACACIA_DOOR_ITEM when creating an ItemStack. Tip: If you are unsure about an item id, launch Minecraft in creative mode and enable Advanced Tooltips by pressing … Read more
Can we call a method in java or C# like this without parameters but separated with commas: No you can’t. According to the method’s signature there are expected 3 integer literals. That being said, you can’t call it this way. Regarding the C#, you could define a, b and c as optional int, like below: … Read more
I can see one thing that is wrong: if (record.length < nameToMatch.length()) { return false; } you are comparing a number of bytes with a number of characters. 0 solved Can anyone help with a Java problem?
Here you go class MyValues{ public int i = 1; private String value = null; public MyValues(String v){ value = v; } int hashCode() { return value.length; } boolean equals(Object obj){ return obj.equals(value); } } Now iterate for duplicates private Set<MyValues> values = new TreeSet<MyValues>(); for(String s : duplicatArray){ MyValues v = new MyValues(s); if … Read more
You can use a TreeMap to keep the items sorted by key and just increment a counter for each occurrence. import java.util.Map; import java.util.Map.Entry; import java.util.TreeMap; public class Counter { public static void main(String[] args) { int[] arr = { 2, 5, 6, 1, 2, 1, 5, 3, 6, 1, 2, 1, 5 }; Map<Integer, … Read more
Both your snippets are incorrect. You are misusing the post increment operator. if(data[counter]<data[counter++]) will never be true, just like if(data[counter]<data[counter]) will never be true. The post increment operator returns the original value of the incremented variable. It’s not clear why you are incrementing counter in the loop body anyway. You should only increment it in … Read more
You want to print the naem which you are receiving by the input and not a single character which is what you’d get if you used .charAt(). 1 solved Unable to print all the characters of a string by charAt() in Java? [closed]
The main() method in java acts as an entry point for the program. In android however there are different methods to define entry points. Such as onCreate() for Activities and onCreateView() for fragments. So you do not need to have any main() method in android. 2 solved Can I put a main method in java … Read more
Your code is confuse, but for what I understood, you want to analyse a certain phrase. First, the constructor of the class that handles the analyse must receive the String to analyse, since it is it’s job. (Every class has a job, the result it’s obtained from the classes methods). Second, there is a convention … Read more
The value 65533 is 0xFFFD. This is the Unicode “Replacement Character” which is used in place of a character that is unrepresentable. It is normally displayed as “�”. The reason you are getting this could be because your standard input (keyboard?) is not capable of producing the character “Δ. Try putting this character into a … Read more
The issue is here: int [] NumArray; element = NumArray.length -1 Details: you declared NumArray but never initialize it until the constructor is called (this is 100% ok) but the next line you are trying to get NumArray.length of the non initialized array and that is the reason… Solution: place this line inside the constructor, … Read more
Loop through your array and check if the number is within the given range (min number for example is nine and max number is 30). Add it to a newly created array then return the array when you’re done. I’ll provide a code snipit shortly. public ArrayList<Integer> withinRange(int min, int max, int[]array){ ArrayList<Integer> list = … Read more
You might want to write a number as binary (base 2), octal (base 8) hexidecimal (base 16) or as a short id (base 36) Are any advantages or disadvantages??? Generally, decimal is fine, however sometimes the number either has to be in a particular format or it makes more sense to read it as a … Read more