Each in turn will be explained with coding examples and written explanations. In order to use the Java classes, we must import the Java input/output package (java.io). Links to JavaTM 2 Platform, ...

java.lang: A collection of language-related classes, such as Object and String, organized in the java package’s lang subpackage; java.lang.ref: A collection of reference-related language classes ...

Preventing naming conflicts. For example there can be two classes with name Employee in two packages, college.staff.cse.Employee and college.staff.ee.Employee Making searching/locating and usage of ...

Java.io is the main package for most stream-oriented I/O classes. This package presents two abstract classes, InputStream and OutputStream . All other stream-oriented I/O classes extend these base ...

Java InputStream Class. The InputStream class of the java.io package is an abstract superclass that represents an input stream of bytes. Since InputStream is an abstract class, it is not useful by ...

A String is a sequence of characters. In Java String is a class from which you make String objects, like: There are no I/O statements in the Java language. The I/O methods belong to classes in the ...