[ad_1] Simply, the difference is that Object is a single object whereas Object[] is an array (multiple or collection) of indexed objects. For example you could have an object that contains a string like Object obj = “Hello”; or you could have an array of strings like Object[] objArray = new Object[2]; objArray[0] = “Hello,”; … Read more
[ad_1] In Java you only have primitive or references to objects.* int[] arr = { 1, 2 }; int i = arr[0]; assert arr instanceof Object; // true arr is a reference to an array which has int as a element. how it was achieved? int[] has it’s own class int[].class and your arr is … Read more
[ad_1] public int h = 44; public int getH() { System.out.println(“Beta “+h); // print line 1 return h; } public static void main(String[] args) { Baap b = new Beta(); System.out.println(b.h+” “+b.getH()); // print line 2 Beta bb = (Beta) b; System.out.println(bb.h+” “+bb.getH()); // print line 3 } In your first print statement in your … Read more
[ad_1] You can’t do this in Java alone. Period. You may try JNI, but definitely not in Java alone. 1 [ad_2] solved Setting action listener on system applications
[ad_1] Thanks @HadiJ for answer Map<String,Integer> result = Arrays.stream(str) .reduce(new HashMap<>(), (hashMap, e) -> { hashMap.merge(e, 1, Integer::sum); return hashMap; }, (m, m2) -> { m.putAll(m2); return m; } ); [ad_2] solved Java stream reduce to map
[ad_1] As you seem to have strings that need to be (optionally) padded with zeros, you can use a different approach than generally used to pad integers: public String addPadding(int length, String text) { StringBuilder sb = new StringBuilder(); // First, add (length – ‘length of text’) number of ‘0’ for (int i = length … Read more
[ad_1] what does each dictionary mean technically? The first Dictionary indicates that the type of the variable is Dictionary. Since you’re creating a new dictionary, you call the Dictionary class’ constructor i.e. Dictionary(). You can think of the new keyword as a word that you need to write in order to call any constructor. That … Read more
[ad_1] Lets see: The first five letters or numbers are included in the minimum charge; there is a $4 charge for each additional character. In pseudo-code: if sign-length <= 5: charge stays the same else: charge = charge + (sign-length – 5) * rate-per-character Should get you going … [ad_2] solved How to formulate this … Read more
[ad_1] Here is a very naive way without regex. public class NotElegant { public static void main(String[] args){ String text = “doctors found many cancer related chest problems in japan during second world war.”; String term = “cancer problems”; System.out.println(getWordsNearEachOther(text,term,3)); } public static String getWordsNearEachOther(String text, String term, int distance){ String word1= term.split(” “)[0]; String … Read more
[ad_1] Here’s a text (comment) illustrated explanation (both the question and the answer): public Object[] methodA() { // We are method A // In which we create an array Object[] someArrayCreatedInMethodA = new Object[10]; // And we can returned someArrayCreatedInMethodA return someArrayCreatedInMethodA; } public void methodB() { // Here we are inside another method B … Read more
[ad_1] You want to transfer a String into a Treecreat? You should give Treecreat a constructor like this. public Treecreat(String yourString){ this.myString = yourString; } So the String is in Treecreat and you can work with it in your method, with call the method in this way: add(new Treecreat(data). [ad_2] solved How can we convert … Read more
[ad_1] Your code didn’t compile for me unless I changed the YYYY to yyyy. After that it seems to work fine. 0 [ad_2] solved Calendar add method error when going beyond the year
[ad_1] Finally it got solved. take a look. public class Solution { static int mod = 1000000007; static int summingSeries(long n) { return (int)(((n % mod) * (n % mod)) % mod); } private static final Scanner scanner = new Scanner(System.in); public static void main(String[] args) throws IOException { BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv(“OUTPUT_PATH”))); … Read more
[ad_1] for (int i = 0; i < str.length(); i++) { if (str.charAt(i) == ‘ ‘ || str.charAt(i) == ‘\t’ || str.charAt(i) == ‘\n’) { // end of token, check if key word String currentWord = s.toString(); boolean isKeyword = false for (int j = 0; j < keywords.length; j++) { if (currentWord.equalsIgnoreCase(keywords[j])) { isKeyword … Read more
[ad_1] To convert (actually, package) .class files into .jar files, you use the Jar tool. You can then generate a .exe file from the .jar using tools like Launch4j, JSmooth or several other packages (search the web for “jar exe”). [ad_2] solved How to convert java or class file to exe file [duplicate]