Reverse a string in Java - Stack Overflow
I have "Hello World" kept in a String variable named hi. I need to print it, but reversed. How can I do this? I understand there is some kind of a function already built-in into Java that does th...
Defining field and its data type as a MAP in application.yaml
Oct 13, 2022 · Is it possible to define datatype for fields in application.yaml in spring boot? Eg: ingestiondata: NAME: String WEIGHT: Double DOB: Date Basically I want to externalize the …
In Spring Boot what is the difference between CrudRepository and ...
Apr 29, 2022 · when building respositories in spring, in my repository interface i extend it using the below extends CrudRepository<EntityName, EntityType> where EntityName is the name …
android - Beginning Programming: How do I pass an ArrayAdapter …
Sep 12, 2020 · I am trying to understand what other alternative I have if I can't write this code: arrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1,bluetoothDevices); …
What is the difference between JDK and JRE? - Stack Overflow
Dec 15, 2009 · The JRE is the Java Runtime Environment. It is a package of everything necessary to run a compiled Java program, including the Java Virtual Machine (JVM), the …
Differences between Runtime/Checked/Unchecked/Error/Exception
Apr 23, 2015 · What are the Runtime exceptions and what are Checked/Unchecked Exceptions and difference between Error/Exception.Why these many types? Instead Java may simply …
Do I need to set java JDK path in user variables or system variables ...
Aug 11, 2020 · Now I saw in javaTpoint tutorial that they were setting the path in user variables didn't create any JAVA_HOME variable. So my question is what is the difference between the …
how to fetch data from database in Hibernate - Stack Overflow
Dec 26, 2013 · This is my class to fetch data from database package com.javatpoint.mypackage; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate ...
Static nested class in Java, why? - Stack Overflow
Oct 1, 2012 · The Sun page you link to has some key differences between the two: A nested class is a member of its enclosing class. Non-static nested classes (inner classes) have access to …
How to generate a WAR file for a Java project without Maven or …
Nov 18, 2022 · A WAR file is a ZIP file with filename suffix .war and a specific internal structure as shown by the link szeak has given to you. So compile your project, create an empty folder, …