I believe you are asking about BufferedReader.
It is in java.io package.
java.io.BufferedReader;
You use javac <filename> to compile a class or package.
It is a part of swing package.
A default package is a package with no name. You can create a Java class without putting package name on top of the code. This class is included in the "default package". Be careful not to be confused with java.lang, which is a package that contains Java's fundamental classes and get's imported by default.
The supermost package of Java is the "java" package.
import package_name.*;where package_name is your package name.by using this syntax you can import an entire package.
Write the class that supposedly "doesn't exist".
The import keyword in Java is used to tell the Java compiler where to find different classes and packages.java.util.Date is the location of the Date class: Date is a member of the util package, which is a member of the java package.
It's the same as importing any other class: import [package name].[class name];
Type in "implements java.util.Collection" after the class name.
A BufferReader can read certain things like BufferedImage which with the right code can allow for animation to be done using a G.U.I (Graphical User Interface) if you want to see how its used i would recommend watching TheChernoProjects 3D game programming tutorials on youtube.
No, each class is assigned to a single package. There is really no need to have one class in more than one package, either; you can use the "import" command in one class to use classes from another package.
The fundamental structure of any Java programme should look like: [package declarations] [import statements] [class declaration] An example is given below: package abc; import java.lang; class Demo { public static void main(String[] args) { Sytem.out.println("Hello! World"); } } //The file containing this class must be named Demo.java