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Solution to Chinese garbled code in Java page

Solution to garbled java page: 1. Set the Encoding option in JSP Files in eclips to UTF-8. 2. Modify the jsp file header to UTF-8. 3. Set the request object encoding in servlet. 4. Set the configuration file in tomat.

Dec 10, 2019 am 10:58 AM

java乱码

Java web garbled solution

Solution to Java web garbled code: 1. Set the encoding format for file saving to be the same as the page encoding format. 2. The encoding declared in jsp. 3. Set the character encoding processed in the filter, which is limited to the input and output data encoding.

Dec 09, 2019 pm 04:33 PM

java乱码

How to find unique numbers in an array in java

The idea of finding non-repeating numbers in an array in Java is: first compare the first number in the array with each number in the array. If the number of times the two numbers are the same is equal to 2, it means that the two numbers are repeated. , if the same number of times is equal to 1, it means that the two numbers are not repeated.

Dec 09, 2019 pm 04:14 PM

java数组不重复数字

How to import excel files in java

The idea of importing excel files in java is: upload the file first, and then read the data of the file. The specific method is: first make a temporary table of imported information to store the information in the imported file. Whenever importing, first clear the table information, then get the data and put it in, then check the imported data, and finally Just import them all.

Dec 09, 2019 pm 03:50 PM

java导入excel文件

What is process synchronization and synchronous transmission in java

Process synchronization in Java means: when a function call is issued, the call will not return before the result is obtained. That is, one thing must be done one by one, and the next thing cannot be done until the previous thing is completed. thing. Synchronous transmission means that the time interval between data blocks is fixed, and their time relationship must be strictly specified.

Dec 09, 2019 pm 03:30 PM

java进程同步同步阻塞

How to generate non-repeating random numbers in java

How to generate non-repeating random numbers in java: Use the random() method in the Math class below java.lang to generate random numbers, and then store the generated random numbers in a set (a set is a value without repeating). When there are repeating values , will not be added to it. The numbers in the set generated using this method are non-repeating random numbers.

Dec 09, 2019 pm 02:48 PM

java

Solution to Java reading and writing garbled characters

Solution to Java reading and writing garbled characters: 1. When reading a file, use the InputStreamReader class to read bytes using the specified character set and decode them into characters. 2. When writing a file, use the specified character set through the OutputStreamWriter class to encode the characters written into bytes.

Dec 09, 2019 pm 01:18 PM

java乱码

Solutions to garbled characters in java files

Garbled characters in Java files are caused by the different encoding formats of the Java files and the editor. We can set the corresponding encoding display in the editor, or convert all the Java files in the project to supported encodings.

Dec 09, 2019 am 11:30 AM

java乱码

How to decompile java

Java decompilation method: You can use java decompilation tools to decompile, such as javap, jad, cfr and the visual decompilation tool JD-GUI. We can directly use commands or directly drag files to the visual decompilation tool JD- Decompilation is available in the GUI.

Dec 07, 2019 pm 03:06 PM

java

Java project garbled solution

Solution to garbled code in Java projects: 1. Set the encoding of the work space. The system default format is GBK. 2. Set the encoding of the project: Right-click the selected project and select "Properties" - "Resources" - "Other" in the pop-up menu to set the encoding.

Dec 07, 2019 pm 02:19 PM

java

How to implement rewriting in interface in java

This article is recommended by the Java language introduction column. It demonstrates rewriting in the interface with an example. I hope it can help you. When an ordinary class implements an interface, both ordinary methods and abstract methods must be rewritten. The default method may or may not be rewritten.

Dec 07, 2019 pm 12:01 PM

java实现接口重写

How to test interface in java

Methods for testing interfaces in Java: 1. Test class test: write a test class, call the Facade interface, and get a value from the database, assign an actual parameter to the formal parameter of the interface in the test class, and then run or breakpoint debugging . 2. Use swagger for testing.

Dec 07, 2019 am 10:22 AM

java测试接口

How to define methods in java

The method definition syntax in Java is: [modifier] + return value type + method name (parameter type) {method body}. The access modifier is the scope of permissions that the method is allowed to access. The return value type is the type of the method's return value. The method name must use a legal identifier.

Dec 07, 2019 am 10:07 AM

java

What does the '=' symbol in java mean?

The "=" symbol in Java is an assignment operator. The assignment operator refers to the symbol that specifies a numerical value for a variable or constant. It is a binary operator, and the operand on the left must be a variable, not a constant or an expression. Syntax format: variable name = expression content.

Dec 07, 2019 am 09:18 AM

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