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Spring Expression (SpEL) Regular expression matches with Example
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Below is an example of "Spring Expression (SpEL) Regular expression matches with Example"
Step.1 Start a Java Project with required jars 
  1. Open Eclipse
  2. Click on menu New -> Others
  3. In wizards type "Java Project" and Select "Java Project"
  4. Click Next
  5. Enter project name as "RegularExpressionOfSpELExample", then click Next
  6. Goto Libraries tab, then click on Add External JARs, then select Spring's 21 Framework Jars and commons-logging-1.1.jar.
  7. Click Finish.
Step.2 Project Explorer Preview 
RunMyProgram.java
package com.springexample;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class RunMyProgram {
	public static void main(String[] args) {
		ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
		Student student = (Student) context.getBean("student");
			System.out.println("Student Details");
			System.out.println("---------------");
			System.out.println("Student No: "+student.getStudentNo());
			System.out.println("Student Name: "+student.getStudentName());
			
			System.out.println();
			
			System.out.println("Student Validator Details");
			System.out.println("-------------------------");
		
		StudentValidator studentValidator = (StudentValidator) context.getBean("studentValidator");
			System.out.println("Student No: "+studentValidator.isStudentNoValid());
			System.out.println("Student Name: "+studentValidator.isStudentNameValid());
	}
}
StudentValidator.java
package com.springexample;

public class StudentValidator {
	private boolean studentNoValid;
	private boolean studentNameValid;
	
	public boolean isStudentNoValid() {
		return studentNoValid;
	}
	public void setStudentNoValid(boolean studentNoValid) {
		this.studentNoValid = studentNoValid;
	}
	public boolean isStudentNameValid() {
		return studentNameValid;
	}
	public void setStudentNameValid(boolean studentNameValid) {
		this.studentNameValid = studentNameValid;
	}
}
beans.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">

	<bean id="student" class="com.springexample.Student">
		<property name="studentNo" value="1001" />
		<property name="studentName" value="John Peter" />
	</bean>
	
	<bean id="studentValidator" class="com.springexample.StudentValidator">
		<property name="studentNoValid" value="#{student.studentNo matches '[0-9]'}" />
		<property name="studentNameValid" value="#{student.studentName matches '[A-Za-z]'}" />
	</bean>

</beans>
Student.java
package com.springexample;

public class Student {
	private int studentNo;
	private String studentName;
	
	public int getStudentNo() {
		return studentNo;
	}
	public void setStudentNo(int studentNo) {
		this.studentNo = studentNo;
	}
	public String getStudentName() {
		return studentName;
	}
	public void setStudentName(String studentName) {
		this.studentName = studentName;
	}	
}
Output 
Student Details
---------------
Student No: 1001
Student Name: John Peter

Student Validator Details
-------------------------
Student No: false
Student Name: false
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RegularExpressionOfSpELExample

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