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Solution to garbled code in java email sending

Solution to garbled email sent by java: 1. Specify the encoding in setContent() or setHeader() when sending the text. 2. Specify the encoding of the email header in setSubject().

Dec 05, 2019 am 11:20 AM

java Garbled characters

Solution to garbled code exported by excel in java

Solution to the garbled code exported by excel in Java: Use the new String(byte[],decode) method to use the specified encoding decode to parse the byte[] (Excel) into a string, and there will be no garbled code.

Dec 05, 2019 am 10:41 AM

java Garbled characters

Solution to java get garbled problem

Java's get garbled solution: obtain the string in the background and convert the encoding, such as the common encoding ISO-8859-1 (String(name.getBytes("ISO-8859-1", "utf-8"))) This can solve the garbled get request.

Dec 05, 2019 am 10:31 AM

java Garbled characters

How to determine whether the code is garbled in java

Garbled characters will appear when submitting data in java. We can use the "java.nio.charset.Charset.forName("GBK").newEncoder().canEncode("test")" method to determine whether it is GBK encoding. Garbled characters.

Dec 05, 2019 am 10:17 AM

java Garbled characters

Introduction to solutions to garbled files when reading files in Java

Garbled characters when reading files in Java are caused by the inconsistency between the encoding used by Java and the encoding of the file being read. We can use FileReader's parent class InputStreamReader to read files and specify the encoding to solve the problem of garbled characters.

Dec 05, 2019 am 10:07 AM

java Garbled characters

Reasons and solutions why the file cannot be found in java relative file path

The reason why the file cannot be found in the relative file path of java: because the user working directory in the environment variables used in different running modes is different. Solution: Just modify the system environment variables (System.setProperty("user.dir", "C:\\XXX\\XXX");).

Dec 05, 2019 am 09:52 AM

java document

Solution to Java file compression garbled code

Solution to garbled java file compression: For compressed files, when the file name is Chinese, if you use the class compression that comes with the JDK API, the file name will be garbled. In this case, just use the class in ant.jar in ANT. This problem can be solved.

Dec 05, 2019 am 09:45 AM

java Garbled characters

Introduction to the method of determining whether a prime number is in Java

How to determine whether it is a prime number in Java: first use the "src%2==0" statement to determine whether the number is an even number. If it is not an even number, pass it through the for (int i=3;i<=sqrt;i+=2) loop "src%i==0" determines whether it is a prime number.

Dec 05, 2019 am 09:38 AM

java

Solution to error code 1603 when updating java

Solution to error code 1603 when updating Java: 1. After the 1603 error occurs, restart the system and uninstall the old version, then download and install the offline installation package. 2. Disable Java content through Java Control Panel, then install a new version and re-enable Java content.

Dec 05, 2019 am 09:25 AM

java mistake

When to use static in java

In "java", when a method or variable needs to be initialized and loaded, or is often called, you can add "static". Methods modified with "static" can be called directly with the class name, and those without "static" modification Methods must first instantiate an object before they can be called.

Dec 04, 2019 pm 05:59 PM

java static use

How is polymorphism implemented in java

Polymorphism in "java" is achieved through dynamic binding, that is, the actual type of the referenced object is determined during execution, and then its corresponding method is called according to its actual type. The existence of polymorphism requires three necessary conditions, namely: first, there must be inheritance; second, there must be overriding; third, the parent class reference points to the subclass object.

Dec 04, 2019 pm 05:20 PM

java Polymorphism accomplish

How to define an interface in java

The basic format of defining an interface in "java" is: "modifier + interface + interface name [extends + parent interface name list] {modifier + global constant; modifier + abstract method;}". It should be noted that defining an interface requires the use of "interface "keyword, only constants and abstract methods can be defined in the interface.

Dec 04, 2019 pm 04:56 PM

java definition interface

How many bytes does the int type occupy in java?

The int type in java occupies 4 bytes. Byte is a unit of measurement used by computer information technology to measure storage capacity. It is a string of binary digits processed as a unit and is a small unit that constitutes information. The most commonly used byte is an octet, that is, it contains an eight-bit binary number.

Dec 04, 2019 pm 04:43 PM

java

Several ways to implement multithreading in java

The way to implement multi-threading in "java" is: 1. Inherit the "Thread" class, create a class to inherit the "Thread" class, then rewrite the "run" method, and call the instance object of this class in the "main" method The "start" method is enough; 2. Implement the "Runnable" interface.

Dec 04, 2019 pm 04:42 PM

java Multithreading Way