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sdkman vs jenv

Jenv is great, but the JDKs have to be manually installed. If you need more than just a couple of them, you'll want to be able to install them via command line, and sdkman provides this capability very cleanly for java. So... is it possible to work with both sdkman and jenv? Yes and no. Some tricks will allow you to tell jenv about the java versions that are managed by sdkman, but setting defaults (using jenv local 17.0 for instance) does not work very well. Time for a cleaner solution. Sdkman provides all of the same functionality, with more power and a slightly different (but equally simple) syntax. I've switched from jenv to sdkman. Here's my cheat sheet.

Setup

Download and install sdkman. Follow the required instructions after installing. Then, run the config command to enable auto_env support.

echo “Installing SDKMAN"
curl -s https://get.sdkman.io | bash

	//
	// Persisting.swift
	//
	// Created by James Sedlacek on 1/30/25.
	//

	import SwiftUI

	/// A property wrapper that manages the persistence of Codable types using UserDefaults.
	///

	//
	// View+OpenUrl.swift
	//
	// Created by James Sedlacek on 11/26/24.
	//

	/// This file provides a safe way to open URLs in SwiftUI applications.
	/// It adds a view modifier that handles URL opening with user confirmation
	/// and multiple opening options (browser, in-app, or copy to clipboard).
	///

	import Cocoa

	final class AppDelegate: NSObject, NSApplicationDelegate {
	private var statusItem: NSStatusItem!

	func applicationDidFinishLaunching(_ aNotification: Notification) {
	statusItem = NSStatusBar.system.statusItem(withLength: 450)
	let contentView = ContentView()
	contentView.translatesAutoresizingMaskIntoConstraints = false
	if let button = statusItem.button {

	import SwiftUI

	struct CustomButton {
	let title: String
	let url: URL
	}

	struct Profile {
	let name: String
	let headline: String

	import XCTest

	// # Setup
	// Big array size: 1_000_000_000 (1 billion elements of 12345)
	// Small array size: 2 [12345, 12345]
	// Loop: 1_000_000 (1 million) times.
	// Machine: Macbook Pro 2023 16" M2 Max 32gb

	// # Results
	// TLDR: Stored: 3% faster

	import SwiftUI

	private struct OnFirstAppear: ViewModifier {
	let perform: () -> Void

	@State private var firstTime = true

	func body(content: Content) -> some View {
	content.onAppear {
	if firstTime {

	import SwiftUI

	private struct OnLoad: ViewModifier {
	let action: () -> Void
	@State private var loaded = false

	func body(content: Content) -> some View {
	content.onAppear {
	if !loaded {
	loaded = true

	extension StringProtocol {

	subscript(_ offset: Int) -> String.Element {
	if offset >= 0 {
	self[index(startIndex, offsetBy: offset)]
	} else {
	self[index(endIndex, offsetBy: offset)]
	}
	}