how to java

[ERROR] Error executing Maven. java.io.FileNotFoundException: The specified user settings file does not exist: /usr/lib/jvm/java-1.8.0-openjdk-amd64

1. Write a program in Java to accept a string in lowercase and change the first letter of every word to uppercase. Display the new string.

Compilation is not supported for following modules: android. Unfortunately you can't have non-Gradle Java modules and Android-Gradle modules in one project

Write a JAVA method that expands a given binomial (ax + by)n, where integers a, b, n are user inputs. For example, if a = 2, b = -12, n = 4 are entered the method should print or return

program in java. Get a string from user and also validate it’s length should be at least 1. Pass this string to a method that returns a new string with the first char added at the front and end, so "cat" yields "ccatc".

use Java NetBeans to write code to implement the list [5, 3, 17, 10, 84, 19, 6, 22, 9] in a Max Heap data structure. For each parent node, display the left and right child of the node.

Le but de ce sujet est d´écrire un programme JAVA pour aider à la gestion de la billeterie des différentes salles d'un complexe cinématographique. Les places non numérotées sont vendues selon deux tarifs