[Solved] How to extend class with two another classes?
You can’t extend multiple classes. Why you can’t extend fragment in another class? solved How to extend class with two another classes?
java
[Solved] How do i creat a program that can stop people from using other programs [closed]
Locking people out of an environment is very hard. Doubly so in Windows. Even in high schools nowadays you’re gonna have to deal with script kiddies which will find ways to outsmart your app. I once worked in a college and I saw the kids there spending more time playing games than paying attention to … Read more
[Solved] Java code making error [closed]
There are two issues. Update the getFacebookContent() method in FacebookPerson to return the content using fb object as below. public String getFacebookContent(){ return fb.getContent(); } Implement getContent() method in Facebook as below: public String getContent(){ return content; } In addition, you may want to initialize content variable as Initial_Content instead of null as you are … Read more
[Solved] What is a Java enum? [closed]
create enum with file name EnumDay.java public enum EnumDay { SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY,NAVEED } and testclass with file name EnumTest.java public class EnumTest { EnumDay day; public EnumTest(EnumDay day) { this.day = day; } public void tellItLikeItIs() { switch (day) { case MONDAY: System.out.println(“Mondays are bad.”); break; case FRIDAY: System.out.println(“Fridays are … Read more
[Solved] Replacing String array by another [duplicate]
use like this it will help String[] subjects = {}; String[] another = {“Physics”,”Chemistry”}; subjects = another.clone(); or second option do like this subjects = Arrays.copyOf(another , another .length); this will copy your another array into your subjects array 5 solved Replacing String array by another [duplicate]
[Solved] In Java What is the < > notation [duplicate]
It denotes generics. Mapper is a generic and you’re inheriting from Mapper<LongWritable, Text, Text, IntWritable>, which is that generic specialized for those types. It’s like Vector – also a generic – you can have Vector<Object> and Vector<SomeOtherClass>. solved In Java What is the < > notation [duplicate]
[Solved] Time complexity difference in System.out.println() [closed]
“Hello World” is a constant so it is O(1) whereas string str is variable of length n so the complexity is O(n) 2 solved Time complexity difference in System.out.println() [closed]
[Solved] Implementation OOP in JAVA
Any of the following solutions will work: Remove the keyword, public from the definition of the classes, Circle and Square Write the classes, Circle and Square as they are (i.e. with public keyword) in separate files. The reason is that Java supports only one public class in a source file. A couple of more points: … Read more
[Solved] java new object.method() why not be a error? [closed]
the operator ‘.’ is prior than new No it isn’t. The operator . is not prior to new: they are both Primary, so they have equal precedence, so they evaluate left to right. why this can be executed right? The real question is why can it be compiled, and I’ve answered that. It hasn’t tell … Read more
[Solved] Convert any file to binary string and from binary to file [closed]
Finally, I discovered that the problem was in the code. Just small mistake using substr func. So, the correct code is: $buffer = file_get_contents(“image.png”); $length = filesize(“image.png”); if (!$buffer || !$length) { die(“Reading error\n”); } $_buffer=””; for ($i = 0; $i < $length; $i++) { $_buffer .= sprintf(“%08b”, ord($buffer[$i])); } echo $_buffer.”<br>”; $nb = “”; … Read more
[Solved] Parsing Json from server
JSONObject jObject = new JSONObject(response); JSONSONArray p = jObject.getJSONArray(“SizeOptions”); for(int i=0;i<p.length();i++) { JSONObject jObjectValue=p.getJSONObject(i); String name = jObjectValue.getString(“Name”); } 2 solved Parsing Json from server
[Solved] How to print values in Java?
I suggest to implement the toString() method for each pojo and then simply use System.out.println(yourObject) for example for the Pessoa class you could write something like this: @Override public String toString() { return String.format(“Pessoa [idade=%s, nome=%s, altura=%s, peso=%s, matricula=%s]”, idade, nome, altura, peso, matricula); } 2 solved How to print values in Java?
[Solved] Android OnClick and OnclickListner
Why don’t you make mNsdUtils to be a member field if it should be accessed from the outside of the function? The root cause saying mNsdUtils is null from the MainActivity.onClickDiscover() implementation. Implement in the method itself, as the context is different throwing a null pointer exception. A small tip for you: read the stack … Read more
[Solved] Override toString() method java
why output is 0 not “lol” ? because you are printing an integer and not an instance of that Main class you can do the following public class Main { @Override public String toString(){ return “lol”; } public static void main(String[] args) { // int aaa=0; Main myMain = new Main(); System.out.println(myMain); } } note … Read more
[Solved] JavaInvalid value for getInt()
First of all, don’t do mysql query in the event, that make the server lag. You have to create hashmap with the data you want to link to mysql server and do a scheduler Async task that do the query. Example: package test; import java.sql.DriverManager; import java.sql.SQLException; import java.util.Map.Entry; import java.util.UUID; import java.util.concurrent.ConcurrentHashMap; import org.bukkit.entity.Player; … Read more