A large number of undergraduates flocked to the IT market. The increase in it employment lags behind the supply of market talents, which puts some pressure on the human resources market. To this end, industry experts pointed out that it newcomers need to do a good job in basic skills. Applicants should first learn to write a resume to improve the success rate of job application.
Programmers are the only way for many
of computer programs (33)-Joda-Time
Thinking logic of computer programs (34)-random
Thinking logic of computer programs (35)-generic (I)-Basic Concepts and Principles
Thinking logic of comput
Part 2: Full BIOS ManualI. Award bios settings Manual Award BIOS is a type of BIOS widely used on compatible computers. However, the information in Award BIOS is in English and requires a deep understanding of relevant professional knowledge, therefore, it is difficult to set up some users. If the information is improperly set, the performance of the entire computer host will be greatly affected. The following describes the meanings and methods of se
void Main (string[] args) throws Interruptedexception {Thread thread = new Hellothread ();Thread.Start ();Thread.Join ();}
Obsolete methodsThere are also methods in the thread class that appear to control the life cycle of the thread, such as:
Public final void Stop ()
Public final void Suspend ()
Public final void Resume ()
These methods have been flagged for various reasons in order to be obsolete, and we should not use t
Thinking logic of computer programs (53), thinking 53
The previous sections introduced various specific container classes and abstract container classes. As we mentioned above, Java has a collection class that provides many common functions for container interfaces, these functions are provided in static mode.
What functions are available? There are two possible types:
For the first type, operations can be
Thinking logic of computer programs (39) and thinking 39
In the previous section, we introduced the ArrayList. the random access efficiency of ArrayList is very high, but the insertion and deletion performance is relatively low. We mentioned that the List interface's parallel List is also implemented, its features are
Thinking logic of computer programs (49), thinking 49
Previously, we introduced two implementation classes HashMap and TreeMap of the Map interface. This section introduces another implementation class LinkedHashMap. It is a subclass of HashMap, but it can keep the elements sorted by insert or access, which is different from the TreeMap key sorting.
It is easy to understand the order by insert. What does th
Construction and interpretation of computer programs (2nd)
[Original title] structure and interpretation of computer programs, Second Edition[Original Publishing House] mascript usetts Institute of Technology【Author】 Harold Abelson, Gerald Jay Sussman, Julie SussmanQiu zongyan[Series name]
Thinking logic of computer programs (91) and thinking 91
In the previous sections, we have discussed Java 7. From this section, we will discuss some features of Java 8, including:
Passing behavior code-Lambda expressions
Function-based data processing-stream
Combined asynchronous programming-CompletableFuture
New Date and Time API
In this section, we will first discuss Lambda expressions. What is it?
Thinking logic of computer programs (73) and thinking 73
In this section and the following sections, we will discuss the container classes in Java and package. This section describes two simple classes, CopyOnWriteArrayList and CopyOnWriteArraySet, and discusses their usage and implementation principles. Their usage is relatively simple. What we need to understand is their implementation mechanism: Copy-On-
, we briefly introduce Linkedhashset, which is a subclass of HashSet, but uses linkedhashmap internally.If you need a map implementation class, and the type of the key is an enumeration type, you can use HashMap, but you should use a dedicated implementation class Enummap, why? Let's discuss it in the next section.----------------To be continued, check out the latest articles, please pay attention to the public number "old Horse Programming" (Scan the QR code below), from the introduction to adv
Thinking logic of computer programs (64) and thinking 64
For file processing, we introduced the stream method, section 57 introduced the byte stream, section 58 introduced the ghost stream, and also introduced the underlying file operation method, section 60 describes random read/write files, Section 61 Describes memory ing files, Object serialization/deserialization mechanisms, and section 62 describes Jav
The AT program runs the commands and programs on the computer at the specified time and date. The AT command can only be used when the schedule service runs. If used without parameters, at lists the scheduled commands.
Grammar
at [\\ComputerName] [{[ID] [/delete]|/delete [/yes]}]
at [[\\ComputerName] hours:minutes [/interactive] [{/every:date[,...]|/next:date[,...]}] Command
Parameters
\\computername
Spe
Thinking logic of computer programs (14), thinking Logic
It is said that Tao shengyi has a second, second, and third life. If binary representation and operation are regarded as one, the basic data type is regarded as two, and the basic data type is regarded as three, then, the combination of classes and the inheritance introduced in the next section make the three born things.
In the previous section, we i
table, a tree is also an important data structure and way of thinking in computer programs. To be able to manipulate data quickly, hashes and trees are two basic ways of thinking that do not require order, prioritize hashing, need order, and consider trees. In addition to the container class Treemap/treeset, the index structure in the database is tree-based (but based on B-trees rather than binary trees),
Efficient Desktop Connection: [automatically restore folders and programs before the computer is closed]
For many friends, daily boot work is only a continuation of the previous day, so the first thing every day is to restore the computer to the state when it was shut down the previous day. Is there any good way?Day-to-day manual recovery can be said to be time-
system-specified, unique, but can be specified by the parameter prefix (prefix), suffix (suffix), and directories (directory), prefix is required, and at least three characters, suffix if NULL, the default is ". tmp" , directory uses the system default directory if it is not specified or is specified as null. Let's look at an example:File File = File.createtempfile ("Upload_", ". jpg"); System.out.println (File.getabsolutepath ());Some of the running outputs on my
Thinking logic of computer programs (66) and thinking 66
We mentioned two problems of multi-thread shared memory in the previous section. One is the race condition and the other is the memory visibility. we mentioned that one solution to these two problems is to use the synchronized keyword, this topic describes this keyword.
Usage
Synchronized can be used to modify the instance method, static method, and c
Thinking logic of computer programs (59) and thinking 59
The previous two sections show you how to read and write file content through a stream. This section describes operations on file metadata and directories.
File and directory operations are ultimately related to the operating system and file system. The implementations of different systems are different, but Java. io. the File class provides a unified
At plans to run commands and
Program . The at command can only be used when the "scheduler" service is running. If you use it without parameters, at lists the scheduled commands.
SyntaxAt [\ computername] [{[ID] [/delete] |/Delete [/Yes]}]
At [[\ computername] hours: minutes [/interactive] [{/every: Date [,...] |/next: Date [,...]}] command]
Parameters\ ComputernameSpecify a remote computer. If this parameter is omitted, the at program plans c
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