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Tag: Java

AWS S3 Client – Local Stack – Test Container

AWS S3 Client – Local Stack – Test Container

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Test Container Test container is a third party Java library which offers to test or validate anything that can run in a Docker container. For Example, we can create lightweight database instances of  MySQL, PostgreSQL or Oracle database to test our data access layer code (DAO , Repositories). Similarly we can test our AWS cloud services like server less apps without actually using the cloud. We can do this with the help of LocalStack, a fully functional local AWS cloud…

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String in Java – String Literal, String Pool, String Objects

String in Java – String Literal, String Pool, String Objects

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         String is a special non primitive data type in java if we compare with any others. But why! In String, we are having string pool as well as heap memory to store the values. The strings are immutable by nature. String is an object which contains sequence of character’s. String is not belong to primitive data type whereas we can create object using java.lang.String. There are two ways to create the string in Java.    …

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Java 8 Interview Questions for Experienced

Java 8 Interview Questions for Experienced

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As same as in the previous versions, Java released two products in it’s 8th version. One is JRE-8 (Runtime environment) and the other one is JDK-8 (Development kit). JRE provides the base libraries (lang and util, input/output etc.), integration libraries (JDBC, RMI etc.), user interface toolkits (Java FX, Swing etc.) and deployments (Java web start). On the other hand, JDK has everything from JRE, in addition to tools like compiler, debuggers and API which are necessary for developing the applications….

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