In all my previous post, I used classes provided by Java. In this post, I will explain how to refer user defined classes. For our example I will create a user defined class “Student” with below class structure. Student package spel.package10; public class Student { private int id; private String name; public Student(int id, String…… Continue reading Refering User Defined Classes in SpEL
Invoking Constructors in SpEL
In this post under Spring SpEL, I will show with example how to invoke constructors. Below is the complete code for your reference Main class 1 package spel.package9; 2 3 import org.springframework.beans.factory.annotation.Value; 4 import org.springframework.context.ApplicationContext; 5 import org.springframework.context.annotation.AnnotationConfigApplicationContext; 6 import org.springframework.context.annotation.ComponentScan; 7 import org.springframework.context.annotation.Configuration; 8 import java.util.List; 9 10 @Configuration 11 @ComponentScan(basePackages = “spel.package9”) 12…… Continue reading Invoking Constructors in SpEL
Invoking static methods in SpEL
In this post under Spring SpEL, I will show with example how to invoke static method in SpEL. In SpEL expression, to inform Spring that we are calling static method of class, we use T operator. T operator followed by class name within paranthesis informs the Spring to use Class object of the specified class.…… Continue reading Invoking static methods in SpEL
Invoking object’s non-static methods in SpEL
In this post under Spring SpEL, I will show with example how to call an instance’s non-static method. Below is the complete code for your reference. Main class 1 package spel.package7; 2 3 import org.springframework.beans.factory.annotation.Value; 4 import org.springframework.context.ApplicationContext; 5 import org.springframework.context.annotation.AnnotationConfigApplicationContext; 6 import org.springframework.context.annotation.ComponentScan; 7 import org.springframework.stereotype.Component; 8 9 @Configuration 10 @ComponentScan(basePackages = “spel.package7”) 11…… Continue reading Invoking object’s non-static methods in SpEL
Creating a store by reference cache
In this post under JCache, I will explain with example how to create store by reference cache. We create a store by reference cache by calling “setStoreByValue” available in “MutableConfiguration” and we need to pass “false” as method argument. Below is the complete main code for your reference. Main Class 1 package defaultPackage; 2 3…… Continue reading Creating a store by reference cache
Creating a store by value cache
In this post under JCache, I will explain with example how to create store by value cache. We create a store by value cache by calling “setStoreByValue” available in “MutableConfiguration” and we need to pass “true” as method argument. Below is the complete main code for your reference. Main Class 1 package defaultPackage; 2 3…… Continue reading Creating a store by value cache
JCache AccessedExpiryPolicy Example
In this post under JCache, I will explain with example the purpose of “AccessedExpiryPolicy” and how to use it AccessedExpiryPolicy is an expiry policy used to inform cache to remove entries which has exceeded its presence based on last accessed. Access involves creation and access of cache entries but not update. Below the main code…… Continue reading JCache AccessedExpiryPolicy Example
Creating inline map in SpEL
In this post under Spring SpEL, I will show with example how to create an inline map. Below is the main class for your reference. Main class 1 package spel.package6; 2 3 import org.springframework.beans.factory.annotation.Value; 4 import org.springframework.context.ApplicationContext; 5 import org.springframework.context.annotation.AnnotationConfigApplicationContext; 6 import org.springframework.context.annotation.ComponentScan; 7 import org.springframework.stereotype.Component; 8 9 import java.util.Map; 10 11 @Configuration 12 @ComponentScan(basePackages…… Continue reading Creating inline map in SpEL
Creating inline list in SpEL
In this post under Spring SpEL, I will show with example how to create and access inlist line. Below is the complete class file reference. 1 package spel.package5; 2 3 import org.springframework.beans.factory.annotation.Value; 4 import org.springframework.context.ApplicationContext; 5 import org.springframework.context.annotation.AnnotationConfigApplicationContext; 6 import org.springframework.context.annotation.ComponentScan; 7 import org.springframework.stereotype.Component; 8 9 import java.util.List; 10 11 @Configuration 12 @ComponentScan(basePackages = “spel.package5”)…… Continue reading Creating inline list in SpEL
Overriding or providing new command at container startup
Some docker images will have “CMD” instruction in their DockerFile out of the box. In this post I will explain how to override that “CMD” instruction if present in DockerFile or provide our own instruction in the absence of “CMD” instruction in the DockerFile. For our example I will use the nginx image from DockerHub.…… Continue reading Overriding or providing new command at container startup
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