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It helps to resolve naming conflicts when different packages have classes with the same names. This also helps you prepare files within your project. As define: java.io package do something related to input output and java.net package do something to do with network and so on. If we toward to put all .java files into a single package, as the project gets larger, then it would become a nightmare to manage all your files. You may create a package as follows with package keyword, which is the first keyword in any Java program followed by import statements. The java.lang package is imported implicitly by default when a java program created and all the other packages must be explicitly imported when a java program created.
package com.xyz.client ;
import java.io.File;
import java.net.URL;
List the unexpected quotients in java? 2/3 = 0 3/2 = 1 1/0 = ArithmeticException 0/0 = ArithmeticException 1.0/0.0 = Inf 1.0/0 = Inf 0.0/0.0 = NaN -1.0/0.0
What are wrapper classes? Java gives specialized classes corresponding to every of the primitive data types. These are known as wrapper classes. They are example: Integer, C
Define Array ? Indexed collections of variable of similar data types or we can say a Set of organized variables of similar type.
Authentication is basically an identification step. Functionality used for J2EE security: Principal : An entity that may be authenticated and identified. Principal n
The state chart diagram given below defines the thread states. 1. Runnable - waiting for its turn to be picked for performing by the thread scheduler based o
What is the use of UnicastRemoteObject in RMI? Ans) The UnicastRemoteObject class gives support for point-to-point active object references using TCP streams. Objects that need
Difference between the File and Random Access File classes? Ans) The File class encapsulates the files and directories of the local file system. The Random Access File class giv
How to initialize array in java ? Individual elements of an array are referenced through the array name and through an integer that represents their position in the array. The
what is the code for page replacement algorithms in nachos os
Performance of interpreted byte codes is sufficient but it can be improved much more than that. Byte codes are changed into machine language within no time, this speed of implement
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