Mary Zheng

Mary graduated from the Mechanical Engineering department at ShangHai JiaoTong University. She also holds a Master degree in Computer Science from Webster University. During her studies she has been involved with a large number of projects ranging from programming and software engineering. She worked as a lead Software Engineer where she led and worked with others to design, implement, and monitor the software solution.

Enterprise Java
Mary ZhengMay 26th, 2025
0 1,077
Fix Cannot Load Driver Class: com.mysql.jdbc.driver in Spring Boot
1. Introduction The “can not find driver exception” with “com.mysql.jdbc.driver" means that the Spring Boot application can not load the…
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Java
Mary ZhengMay 16th, 2025
0 2,243
@Context Complex Source Mappings Example
1. Introduction The org.mapstruct.Context annotation from MapStruct, a Java annotation processor for generating type-safe bean mapping code, marks a parameter…
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Java
Mary ZhengMay 6th, 2025
0 1,137
Map an Empty String to Null Using MapStruct Example
1. Introduction An empty string (“”) is the String object with an intentional blank value. Null is a literal used…
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Enterprise Java
Mary ZhengApril 22nd, 2025
0 863
Copy Specific Fields via Spring BeanUtils.copyProperties Example
1. Introduction In this example, I will demonstrate all the available methods to copy specific fields via BeanUtils.copyProperties in a…
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Core Java
Mary ZhengApril 16th, 2025
0 828
cURL Request to HTTP Request Conversion Example
1. Introduction The Client URL (cURL) is a tool for transferring data from or to a server using URLs. It…
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Enterprise Java
Mary ZhengApril 9th, 2025
0 1,612
WireMock with Spring Boot Example
1. Introduction WireMock is a powerful HTTP mock server that stubs and verifies HTTP requests. It provides a controlled test…
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Core Java
Mary ZhengApril 1st, 2025
0 410
Closing Scanner Java Example
1. Introduction The java.util.Scanner class can read input from System.in, File, InputStream, Path, Readable, String, etc. It implements the Closeable…
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Software Development
Mary ZhengMarch 26th, 2025
0 1,223
Read an External Properties File in Maven
1. Introduction Reading external properties in a maven project is useful when accessing secure credential configuration, or logging settings, etc.…
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Java
Mary ZhengMarch 20th, 2025
0 2,531
JDK_JAVA_OPTIONS vs JAVA_TOOL_OPTIONS
1. Introduction JDK_JAVA_OPTIONS and JAVA_TOOL_OPTIONS are environment variables used to pass Java Virtual Machine (JVM) options to configure the JVM…
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