As the Answer by NFE, and Niks Tyagi has showed, you Should to write: if (f.equals(“bif”)) { System.out.println(“BIF FAN”); } else { System.out.println(“Doesn’t Seem like a FAN”); } But if you want to do the second part too with the if expression, you can write like following. if (f.equals(“bif”)) { System.out.println(“BIF FAN”); } if(!f.equals(“bif”)){ System.out.println(“Doesn’t … Read more
Best practice is to make them separate classes in three different source code files. It is possible to have more than one class in a single source code file by using inner classes. However, I would advise against it in this case, because it would break best practice. And the compiler will still create separate … Read more
You’d use them when you don’t need to give the constructor or method any data. In the case of your ArrayList it’s to make an empty array with a default capacity of 10 elements (OpenJDK implementation). As an abstract example, I can tell you to eat() but I don’t care what you eat, so I … Read more
There are 1000ms in a second. 1000 / 10 is 100. Divide the number of 10 ms ticks by 100 and you’ll have the number of seconds. 1 solved How to convert 10ms ticks value into seconds using Java?
it cannot find the method corresponding to your button maybe u changed the button or delete it and make it again …write from scratch and this time be careful with the button and its method not to have any conflict! ps. maybe your manifest file is missing something …app crashing is sometimes from there too! … Read more
Yes it’s possible: String test = “voiceemailchat”; String find = “chat”; if(test.contains(find)) { //string found } 0 solved Search a word in java?
Introduction Java Class Exceptions are a type of error that occurs when a program is unable to execute a specific task due to a problem with the code. These exceptions can be caused by a variety of issues, such as incorrect syntax, missing classes, or incompatible data types. It is important to understand how to … Read more
Introduction When programming in Java, it is important to understand when and how to use blank parameters. Blank parameters are used to indicate that a method does not require any parameters to be passed in. This can be useful when a method does not need any additional information to execute, or when a method is … Read more
sizeof is an operator (and keyword) in C#. It’s not in Java. solved Is sizeof a keyword in Java [closed]
As defined in JLS, the first “part” of the for loop declaration, ForInit, is a list of statement expressions or a local variable declaration; j isn’t a statement expression (an assignment; a pre/post increment/decrement; a method invocation; a new class initialization) or a local variable declaration, so it’s invalid syntax. Depending upon what you are … Read more
There are two key elements you should know about: Use a variable to store the object and then pass it as a parameter to a method. Part 1: a variable After creating an object, you should store it in a variable. Otherwise it just exists in memory and will be garbage collected and thus be … Read more
It’s not completely clear what you are looking for, but note that java long arithmetic is effectively done mod 264. You can investigate modular inverses and the extended euclidean algorithm yourself, as well as how java handles integer overflow. The BigInteger class makes doing these experiments relatively easily, as this example shows. public class Main … Read more
It is not legal properties file. But it is legal HOCON conf. An example of your conf file reading with hocon generated by tscfg. import com.typesafe.config.Config; import com.typesafe.config.ConfigFactory; import org.junit.Assert; import java.io.File; public class SampleConf { public final SampleConf.Address Address; public final SampleConf.Person Person; public static class Address { public final int Pin; public Address(final … Read more
map.keySet().stream().map(Object::toString).collect(toCollection(LinkedHashSet::new)); solved Keyset to Set of string [closed]
Because it is a recursive function. Let’s say you call it with n=3… For the first case you would get: printSeriesInReverse(3) 3 > 0 // YES prints 3 printSeriesInReverse(2) 2 > 0 // YES prints 2 printSeriesInReverse(1) 1 > 0 // YES prints 1 printSeriesInReverse(0) 0 > 0 // NO // End of recursion Final … Read more