Solution to the problem that java files display Chinese garbled characters in eclipse

Solution to the problem that java files display Chinese garbled characters in eclipse

Solution to the problem that java files display Chinese garbled characters in eclipse: 1. Set the encoding method of the eclipse workspace. 2. Set the engineering coding method for a single project. 3. Set the encoding format of a single file. 4. Set the encoding method of java type files.

Dec 05, 2019 pm 04:43 PM
java 乱码
what are exceptions in java

what are exceptions in java

An Exception in Java, also known as an exception, is an event that occurs during program execution and interrupts the normal instruction flow of the executing program. In order to handle running errors in the program promptly and effectively, exception classes must be used.

Dec 05, 2019 pm 04:21 PM
java
How to encrypt in java

How to encrypt in java

Java encryption method: 1. Encrypt using MD5 (Message Digest Algorithm) encryption algorithm. 2. Use BASE64 for encryption/decryption. 3. Use DES (Data Encryption Standard) symmetric encryption. 4. Use RSA asymmetric encryption.

Dec 05, 2019 pm 03:34 PM
java 加密
How to read whether a file exists in java

How to read whether a file exists in java

In Java, you can use the file.exists() method of the File class to detect whether a file exists. If and only if the file or directory represented by the abstract path name exists, it returns true; otherwise, it returns false.

Dec 05, 2019 pm 03:17 PM
java
How to solve java Chinese garbled characters in linux environment

How to solve java Chinese garbled characters in linux environment

Solution to Java Chinese garbled characters in Linux environment: Manually set the Chinese fonts required by the Java program. Upload the required font files to the $JAVA_HOME/jre/lib/fonts directory and restart tomcat.

Dec 05, 2019 pm 03:00 PM
linux java
How to compare characters in java without case sensitivity

How to compare characters in java without case sensitivity

Java's case-insensitive way to compare characters: Use equalsIgnoreCase() in Java to compare a string with a specified object, regardless of case. Returns true if the given object is equal to the string; false otherwise.

Dec 05, 2019 pm 02:33 PM
java
Introduction to the method of judging whether it is a number in Java

Introduction to the method of judging whether it is a number in Java

How to determine whether it is a number in Java: 1. Use the isDigit() method to determine whether it is a number. 2. Use the regular expression "^[-\+]?[\d]*$" to determine whether it is a number. 3. Determine whether it is a number through the ASCII code.

Dec 05, 2019 pm 02:21 PM
java
Loading java vm error solution

Loading java vm error solution

Solution to loading java vm error: 1. Do not use the JAVA_HOME variable in the JAVA installation tutorial. 2. Use absolute paths when establishing PATH and CLASSPATH. Do not use %JAVA_HOME%.

Dec 05, 2019 pm 02:07 PM
java 错误
Garbled characters appear when url passes Chinese parameters in Java

Garbled characters appear when url passes Chinese parameters in Java

The reason why the Chinese parameter in "java" is garbled is that the server uses "ISO" encoding by default to decode the byte stream into a character stream. The solution is: the obtained string needs to be encoded into a byte stream using "ISO" first, and then decoded into a character stream using "utf-8".

Dec 05, 2019 pm 02:05 PM
java url 中文参数 乱码
Solution to garbled file name when downloading files in Java

Solution to garbled file name when downloading files in Java

Solution to garbled file names when downloading files in Java: 1. Use the URLEncoder.encode() method to specify the file name encoding for IE or browsers based on IE. 2. Non-IE browsers use the String.getBytes(String decode) method to solve garbled characters.

Dec 05, 2019 pm 01:36 PM
java 乱码
Java randomly generates non-repeating numbers between 1 and 15

Java randomly generates non-repeating numbers between 1 and 15

The method of "java" to randomly generate non-repeating numbers between 1 and 15 is: you can use the "random" method, first create a linked list of "Integer" collection, and then use the "random" function and loop to realize that when 15 exists in the linked list When the number is reached, it ends inserting data into the linked list, and finally iterates and outputs the elements in the linked list.

Dec 05, 2019 pm 01:33 PM
java 随机 不重复 数字
How to enter an array from the keyboard in java

How to enter an array from the keyboard in java

The method of inputting an array from the keyboard in "java" is: you can use the "Scanner" class, first create a "Scanner" object, then define an array to save the input data, and separate the elements through ",", and finally pass " parseInt" function converts the input string into the "Int" type.

Dec 05, 2019 pm 01:18 PM
java 数组 键盘 输入
How to implement file upload in java

How to implement file upload in java

The method to implement file upload in "java" is: first configure the upload parameters, then parse the content of the request, extract the file data, then iterate the form data, process the fields that are not in the form, then define the storage path and full path of the uploaded file, and finally Just save the file to your hard drive.

Dec 05, 2019 am 11:52 AM
java 实现 文件上传
Solution to garbled code in java jsp page

Solution to garbled code in java jsp page

Java jsp page garbled solution: The jsp page is garbled because the jsp page does not specify the encoding. As long as the encoding format is specified at the top of the jsp page (use pageEncoding="utf-8"), the jsp page garbled code can be solved.

Dec 05, 2019 am 11:38 AM
java jsp 乱码

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