Interface Expected Here Java Error

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Interface Expected Here Android Studio

more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags no interface expected here java Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, android interface expected here helping each other. Join them; it only takes a minute: Sign up implementing a interface to a class: class to interface to interface up vote 1 down vote favorite hi im a beginner in this and im trying

No Interface Expected Here Android Studio

to implement a class to a interface. The interface extends another interface. Im making a class with methods to run through a list and interfer with it, the two interfaces are apart of this. The two interfaces are in each its separate file, but everything is in the same package, hope this is right. Im getting the following errors: From the class doublelinkedlist: interface expected here From the interface A: doublelinkedlist.A is already defined in doublelinkedlist,

Interface Expected Here Error Android

interface expected here From interface B: doublelinkedlist.B is already defined in doublelinkedlist Code class: package doublelinkedlist; import java.util.*; public class Doublelinkedlist implements A { Code interface A: (in separate file called A.java ) package doublelinkedlist; import java.util.Iterator; public class A { // am I supposed to have a class here? or just have the interface? public interface A extends B { Code interface B: (in separate file called B.java ) package doublelinkedlist; public class B { public interface B extends Iterable { There is no code for the two interfaces in the class, so I dont understand why i get an error saying its already defined. Anybody got a clue? java interface share|improve this question edited Oct 15 '13 at 14:54 Cyrille Ka 10.9k22549 asked Oct 15 '13 at 14:50 comodeque 2026 3 An interface cannot extend from a class, just from another interfaces. A class cannot extend from an interface, just from one single non-final class. A class can implement one or several interfaces. –Luiggi Mendoza Oct 15 '13 at 14:53 2 @JeroenVannevel you can declare inner interfaces/classes inside a class, there's nothing wrong about it. –Luiggi Mendoza Oct 15 '13 at 14:53 add a comment| 3 Answers 3 active oldest votes up vote 2 down vote accepted interface expected here indicates that the compiler is expecting an interface after implements, where you ha

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No Interface Expected Here Serializable

I am getting this error: File: C:\Documents and Settings\Marist User\My Documents\Brandi\pkAlgs\PrimHeap.java [line: 3] Error: interface expected here cannot find symbol java for the following code: import java.util.*; public class PrimHeap implements PriorityQueue { private Association [ ] buffer; private int [ ] loc; //**********************************/ private int last; private final http://stackoverflow.com/questions/19384298/implementing-a-interface-to-a-class-class-to-interface-to-interface int DEFAULT_SIZE = 10; public PrimHeap( ) { buffer = new Association[DEFAULT_SIZE]; loc = new int[DEFAULT_SIZE]; //*********************************/ last = 1; } public PrimHeap(Association [ ] theArray) { //Heapify constructor //pre-condition: size == capacity of theArray //post-condition: buffer is heap ordered //*************************************** buffer = new Association[theArray.length + 1]; loc = new int[theArray.length + 1]; for (int i https://coderanch.com/t/405199/java/java/interface-expected = 1; i <= theArray.length; i++) loc[i] = i; //****************************************** last = theArray.length + 1; for (int i = 0; i < theArray.length; i++) buffer[i+1] = theArray[i]; for (int j = (last - 1)/2; j > 0; j--) { siftDown(j); } } private void resize(int newAmt) { Association [ ] newBuffer = new Association[newAmt]; //******************************************** int [ ] newLoc = new int[newAmt]; for (int i = 1; i < last; i++) { newBuffer[i] = buffer[i]; newLoc[i] = loc[i]; } //**********************************************/ buffer = newBuffer; loc = newLoc; //******************************/ } public void add(Association obj) { //precondition: none //post-condition: if last = capacity, the buffer size is increased // obj is added to the heap, and heap ordering is retained if (last == buffer.length) resize(buffer.length + DEFAULT_SIZE); buffer[last] = obj; loc[buffer[last].getKey()] = last; //****************************/ siftUp(last); last++; } public Association deleteMin( ) throws HeapUnderflowException { //precondition: Heap is not empty //post-condition: size of heap is decreased by 1, minimum key // is removed and returned, heap order is maintained. //exception: t

expected here Shamsuddin Ahammad on 5/09/2011 No Comment The code below leads to an error "interface expected here" public interface MyInterface extends Thread { http://java-error-messages.blogspot.com/2011/05/interface-expected-here.html } Here an interface is created (MyInterface) and it inherits(extends) the Thread http://forums.devshed.com/java-help-9/interface-expected-error-167426.html class which is not possible at all. Why? Because an interface can inherit only another interface, not any class. As Thread is a class, it cannot be inherited by any interface. The code below is correct as the interface inherits another interface Runnable public interface MyInterface extends interface expected Runnable { } A similar type of error is posted at no interface expected here If the above solutions do not work for you. Please comment below giving your code. I'll try to respond. Posted by Shamsuddin Ahammad Email ThisBlogThis!Share to TwitterShare to Facebook Share: Facebook Twitter Google+ StumbleUpon Digg Delicious LinkedIn Reddit Technorati Newer Post Older Post interface expected here 0 comments: Post a Comment Subscribe to: Post Comments (Atom) Populars Comments Archive Popular Posts package system does not exist class, interface, or enum expected class [ClassName] is public, should be declared in a file named [ClassName].java non-static method ... cannot be referenced from a static context is not abstract and does not override abstract method java.sql.SQLException: Access denied for user recursive constructor invocation attempting to assign weaker access privileges integer number too large Font ' net/sf/jasperreports/fonts/pictonic/pictonic.ttf ...' is not available to the JVM Blog List Java Technology Read password (hidden) from Console GWT Guide Google Web Toolkit 2 Application Development Cookbook iReport Tutorial iReport 3.7 Book Java Source Code Binary Search Labels Abstract (4) access modifier (4) Array (6) Class (11) Color (1) Constructor (5) Data Type (3) Enum (1) Expression (5) font (1) Inheritance (4) Interface (6) jasperreports (1) JDBC (4) JPA (2) JVM (1) List (1) Loop (1) Method (10) overriding (3) Package (1) Parameter (1) pictonic (1) return type (1) Selection (2) Static (3) Subclass (1) Super class (1) Va

Search Username Password Remember Me? Register Lost Password? facebook google twitter rss Free Web Developer Tools Advanced Search  Forum Programming Languages Java Help I got a "no interface expected here" Error... Thread: I got a "no interface expected here" Error... Share This Thread  Tweet This + 1 this Post To Linkedin Subscribe to this Thread  Subscribe to This Thread July 22nd, 2004,12:51 AM #1 No Profile Picture DivineVengeance View Profile View Forum Posts  Registered User Devshed Newbie (0 - 499 posts)  Join Date Jul 2004 Posts 9 Rep Power 0 I got a "no interface expected here" Error... I know I'm not suppose to post the entire code, but with this error, I don't where what line is causing it... The error says problem is on line 39, but but that is the listener class, must be else where... Code: D:\Java\Chp6 Projects\BarDriver.java:39: no interface expected here private class nextListener extends ActionListener ^ 1 error Tool completed with exit code 1 Code: import javax.swing.*; import java.awt.event.*; import java.awt.*; public class BarDriver extends JApplet { private final int MAX_WIDTH = 270, MAX_HEIGHT = 200, GAP = 35, MAX_BARS = 6; private int x=0, y=0, height, value; private JButton next; public void init(Graphics page) { setBackground(Color.lightGray); setSize (MAX_WIDTH, MAX_HEIGHT); } public void paint(Graphics page) { Bar bar[] = new Bar[MAX_BARS]; for (int i = 0; i