Your strBlock variable is a local variables within the static initializer block. Its scope is limited to that block, just like any other local variable. If you want to be able to access it in the main method, you’ll need to declare it as a field: static strBlock; // Static field declaration static { // … Read more
As Andy Turner said for your first question : clone() is not being used. It just so happens that the variable is called clone, but that has no semantic importance to the code. Concerning the for statement he’s composed of 3 parts ,each separated by one ; , and none of them is obligated to … Read more
Move Scanner in = new Scanner(System.in); to before do and in.close(); to after } while (loop == true); (basically, move the Scanner instantiation and closing to outside of the do-while loop. 0 solved Problems with resolving a while loop for a menu [closed]
Every time you append the * in the builder object, clear the previous content. You can use stringBuilder.setLength(0); import javax.swing.*; public class Prop { public static void main(String args[]) { StringBuilder stringBuilder = new StringBuilder(); int n = 0; n = Integer.parseInt(JOptionPane.showInputDialog(“Enter value”)); int[] arr = new int[n]; String stars = “”; int input = … Read more
Your main method has to have the signature public static void main(String[] args) meaning you can’t mark it as returning a boolean. I don’t know what the point of this is but if you need it to return a boolean you should make another method to return a boolean. Your method needs to have he … Read more
there is no custom operator overloading in java. [so you cannot overload it to call equals()] the equals() ensures you check if 2 Objects are identical,while == checks if this is the exact same object. [so no, using == does not invoke equals()]. 2 solved Comparing java Strings with == [duplicate]
No, you can’t do that. The two constructors would have the same signature: MyClass(double, double, double). In order to distinguish the two, you’d have to give them different names, and you can’t do that with constructors. You can however create differently named static methods to use instead of constructors, e.g. public class MyClass { // … Read more
1 The methods you used were for returning longs. The method you should use is String.hashCode() if you don’t need hashing for security purposes. Make sure to cast an integer as a String through String.valueOf(int) before hashing it, since you said you want to hash ints as well. int hash = String.valueOf(input).hashCode(); 2 Edit: Added … Read more
The JLS states that if B is assignable to A, then yes, B[] is assignable to A[]. This opens the door to serious implications though, demonstrated by this code: class A {} class B extends A {} class C extends A {} //… B[] bs = new B[2]; A[] as = bs; as[0] = new … Read more
Split the string by space and rename the last word. Then using the StringBuilder concatenate them together back to your original String. String str = “hello I am a example example” String[] parts = str.split(” “); parts[parts.length-1] = “moon”; System.out.println(parts[parts.length-1]); StringBuilder sb = new StringBuilder(); for (int i=0; i<parts.length; i++) { sb.append(parts[i]); sb.append(” “); } … Read more
I can give you a solution: /** * Convert a given string to array of numbers. * * @param words * The string * @param startValue * The start value for the array. * @return The array of numbers. */ public static final int[] wordsToNumbers(String words, int startValue) { if (words == null || words.length() … Read more
Replace this line: Picasso.with(AddAdsActivity.this).load(image).placeholder(R.drawable.camera).into(TuitionImage); With this: Picasso.get().load(image).placeholder(R.drawable.camera).into(TuitionImage); And that’s it.. Your error will be solved. 2 solved How to insert and display an image in Android? [closed]
You can try this as one of the solution if you do not want to specify the dimension for width and height of Image <?xml version=”1.0″ encoding=”utf-8″?> <android.support.v7.widget.CardView android:id=”@+id/cvAdvertFavourite” xmlns:android=”http://schemas.android.com/apk/res/android” xmlns:card_view=”http://schemas.android.com/apk/res-auto” android:layout_width=”match_parent” android:layout_height=”wrap_content” android:layout_marginTop=”2dip” android:layout_marginBottom=”2dip” card_view:cardUseCompatPadding=”true” > <LinearLayout android:layout_width=”match_parent” android:layout_height=”match_parent” android:orientation=”horizontal” android:padding=”8dp” > <ImageView android:id=”@+id/ivCardFavouriteAnimalPhoto” android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:layout_marginRight=”8dp” android:weight = “2”/> <RelativeLayout android:layout_width=”wrap_content” android:layout_height=”wrap_content” android:weight … Read more
The problem is that the radio groups in your HTML form have conflicting names. You’re using the following for all groups: name=”radio” What you need to do is to use a different name for each group; in order words, use the same name for each question within a single group. Assuming your question IDs are … Read more
you have to create an instance of your class in order to access non static variables from your static methods in java. public class MainGUI { int num1= 1366, num2= 528, num3= 482, sum; // declare these static? public static void main(String args[]) { MainGui m = new MainGUI(); sum = m.num1 + m.num2+ m.num3; … Read more