Java 11-21 Evolution

Is Java still relevant and worth learning in 2024?

We will look at Java’s evolution and impact on software development to show why it matters more than ever.

Java is more than a language.

@_tamanm

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Mohamed Taman Chief Solutions Architect Java Champion | CEO @SiriusXI | Oracle ACE Alumni | Jakarta EE Ambassador | Author | Trainer | Speaker. Java 11-21 Evolution Is Java still relevant and worth learning in 2024? We will look at Java’s evolution and impact on software development to show why it matters more than ever. Java is more than a language. @_tamanm | | |

Java 11-21 Evolution

By Mohamed Taman

Java 11-21 Evolution

Is Java a tired relic of the past that’s ready for the programming language museum, or is it still a vital weapon in every good developer’s arsenal? This session will examine the evolution of Java from 11 to 21 and the impactful features that make your life easier. Java has been a powerful and widely used programming language for over two decades. Java has transformed the software development landscape and remains dominant in modern software development. With every year seeing new young pretenders to the crown emerge, is Java still relevant and worth learning in 2023? We will look at Java’s evolution and impact on software development to show why it matters more than ever.

2 years ago
362

Mohamed Taman

Chief Solutions Architect, Owner/CEO of SiriusXI, a Java Champion, Oracle ACE, JCP member, Consultant, Speaker, and Author.

	public boolean equals(Object o) {
	if (!(o instanceof Point))
	return false;
	Point other = (Point) o;
	return x == other.x
	&& y == other.y;
	}

	public boolean equals(Object o) {
	return (o instanceof Point other)
	&& x == other.x
	&& y == other.y;
	}

	package com.example.geometry;

	public abstract sealed class Shape
	permits Circle, Rectangle, Square, WeirdShape { ... }

	public final class Circle extends Shape { ... }

	public sealed class Rectangle extends Shape
	permits TransparentRectangle, FilledRectangle { ... }
	public final class TransparentRectangle extends Rectangle { ... }
	public final class FilledRectangle extends Rectangle { ... }

	public final class Square extends Shape { ... }

	public non-sealed class WeirdShape extends Shape { ... }

	package com.example.expression;

	public sealed interface Expr
	permits ConstantExpr, PlusExpr, TimesExpr, NegExpr { ... }

	public final class ConstantExpr implements Expr { ... }
	public final class PlusExpr implements Expr { ... }
	public final class TimesExpr implements Expr { ... }
	public final class NegExpr implements Expr { ... }

	package com.example.expression;

	public sealed interface Expr
	permits ConstantExpr, PlusExpr, TimesExpr, NegExpr { ... }

	public record ConstantExpr(int i) implements Expr { ... }
	public record PlusExpr(Expr a, Expr b) implements Expr { ... }
	public record TimesExpr(Expr a, Expr b) implements Expr { ... }
	public record NegExpr(Expr e) implements Expr { ... }

	public boolean equals(Object o) {
	return (o instanceof CaseInsensitiveString) &&
	((CaseInsensitiveString) o).s.equalsIgnoreCase(s);
	}

	public boolean equals(Object o) {
	return (o instanceof CaseInsensitiveString cis) &&
	cis.s.equalsIgnoreCase(s);
	}

	//More complex examples
	if (obj instanceof String str && str.length() > 5)
	{ .. str.contains(..) .. }

Java 11-21 Evolution

Java 11-21 Evolution

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