java performance tuning interview questions

I will share 11 practical tips on Java performance tuning and java Tuning Most developers think that performance optimization is a complicated problem and requires a lot of experience and knowledge. Yes, it is not wrong. It is not

differences, HashMap and hashtable differences (learn the coding patterns in the underlying JDK for these classes).18, GC is what, why should have GC, simple introduction GC.19, float f=3.4 is correct.20. Introduce the collection framework in Java.21. Implementation of the comparison method in collection framework22. The difference between string and StringBuffer23, final, finally, finalize the difference24. Object-oriented features25, string is the

11 simple Java performance tuning techniques, java Tuning Most developers naturally think that performance optimization is complex and requires a lot of experience and knowledge. Well, it cannot be said that this is completely wro

Concise answers to several java interview questions, concise java interview questions The difference between equal and = in java: The equal method is used to compare object references u

A basic knowledge 1.1 What is the performance Before performance tuning, let's first look at what performance is. As for performance, I think everyone who has studied Java can list a few points or even talk about it. In the book

. To restore the object, use the input stream. 41. How many types of streams are there in Java? JDK provides some abstract classes for each type of stream for inheritance. which classes are they?A: byte streams and byte streams. Byte streams are inherited from inputstream outputstream, and bytes streams are inherited from inputstreamreader outputstreamwriter. There are many other streams in the Java. Io pac

collection process are explained.The five articles will explain the principles of Java Program Performance tuning, especially the necessary knowledge in this process and the need to determine whether your program needs tuning. It also describes the problems you may encounter during

The main processes of tuning the JVM are:1. Determine heap memory size (-XMX,-XMS)2, the rational distribution of the new generation and old generation (-xx:newratio,-XMN,-xx:survivorratio)3. Determine the size of the permanent zone (-xx:permsize,-xx:maxpermsiize)4. Select the garbage collector5, the garbage collector to set reasonable6. Disable GC (-XX:+DISABLEEXPLICITGC)7. Disable class Metadata recycling (-XNOCLASSGC)8. Disable class validation (-x

English Original: Java Exception and Error interview Questions Answers In the Java Core Knowledge interview, you always encounter questions about handling exception and error. Exception processing is a very important aspect of

We are going to discuss with you today that we will correctly resolve the 12 difficult questions about DB2 performance tuning. If you are curious about the 12 difficult questions about DB2 performance tuning, the following article

Linked list is often in the interview, this article refers to some other articles, together with the small series of their own summary, the basic algorithm has been tested and optimized.Algorithm Daquan (1) There are also some list problems in the single linked list, which will be sorted out in the future.* REFS:* http://blog.csdn.net/fightforyourdream/article/details/16353519* http://blog.csdn.net/luckyxiaoqiang/article/details/7393134 easy to handle

Java learning path-simple basic interview questions, java path-Questions 1. What are the features of object orientation? A: The object-oriented features mainly include the following: 1) Abstraction: Abstraction refers to the process of summarizing the common features of a cl