java programming interview questions and answers

Java Exception Common interview question one, Java exception understandingExceptions are mainly handling errors that cannot be caught at compile time. The problem can continue to execute smoothly, without causing the program to terminate, to ensure the robustness of the program.Processing: When an abnormal state is generated, if the current context does not have

+ 4 + 5 = 4 + 5 + 6 = 7 + 8 = 15, therefore, three consecutive sequences 1-5, 4-6, and 7-8 are output.Analysis: This is Netease's interview question. void FindContinuousSequence(int num){if(num 26. String ArrangementQuestion: enter a string to print all the characters in the string.For example, if the input string ABC is used, all strings that can be sorted by characters A, B, and C are output.ABC, ACB, Bac, BCA, cab, and CBA. Analysis: This is a goo

(This is a gathering moment (YY) of the pen test, in the written test did not write out, and later wrote out, I hope that the great God can give a better solution ... PS: Now the interviewer always have the interview to ask the written test programming problem thinking habits, hehe Topic Brief: Enter a string and the number of times to print, creating a thread for each character, which is responsible for p

need to lay the foundation, the IDE select one to understand.2. Study the idea of Java programming"Thinking in Java" This book is the Great God highly recommended books, since the great God recommended, we might as well study it.It does not guarantee that you are out of the new ranks, but will lead you to the path of master.3. Learning: HTML, CSS, JavaScript, JQ

This question is only used to examine the basic programming skills of C ++/C programmers. The content is limited to common C ++/C syntaxes and does not involve data structures, algorithms, and esoteric syntaxes. The test score reflects the programming quality and understanding of C ++/C, but does not reflect the examinee's intelligence and software development ability. The written examination time is 90 min

　 The Java Collection Framework is the most frequently asked question of Java interviewing, and it is necessary to understand the powerful features of Java technology to master the set framework. Here are some practical questions, often asked in the core Java

; k ) TestFunction (k, J, i);On the basis of scenario one, this scheme puts the instantiation of the cyclic variables out of the loop, which can further reduce the number of instances of the related cyclic variables, and the scheme time-consuming situation is as follows: Variable Instantiation (number of times) Initialization (number of times) Comparison (number of times) Self-increment (number of times) I 1 1 10 1

Java custom generic interview questions: receive any array to reverse, java custom You can only operate on a certain type for reversal without using the generic type. The Code is as follows: package com.swift.fanxing;import org.junit.Test;public class RenyiReverse { @Test public void test() { int arr[]=new

Controller: When the user clicks the Submit button in the Web page, the controller accepts the request and invokes the appropriate model to process the request. The corresponding view is then called according to the result of the processing to display the results of the processing. MVC process: First the controller accepts the user's request, invokes the corresponding model for business processing, and returns the data to the controller. The controller invokes the corresponding view to

;. java.util Package: Java Utility Class Library Java.util package. In this package, Java provides some useful methods and data structures. For example, Java provides a date (Data) class, a calendar class to produce and get dates and times, a random number class that produces random numbers of various types, and a stack (stack), vector, bit set (Bitset), and a ha