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Java Basic

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Java Introduction

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Java Get Started

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Java Syntax

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Java Output / Print

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Java Comments

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Java Variables

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Java Data Types

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Java Type Casting

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Java Operators

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Java Strings

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Java Math

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Java Booleans

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Java If ... Else

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Java Switch

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Java While Loop

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Java For Loop

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Java Break / Continue

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Java Arrays

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Java Methods

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Java Classes

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Java file Handling

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Java How To

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Java Reference

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Java String Methods

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Java Math Methods

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Java Output Methods

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Java Arrays Methods

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Java ArrayList Methods

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Java LinkedList Methods

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Java HashMap Methods

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Java Errors and Exception

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Text lesson

Loop Through a HashMap

Traverse through the entries of a HashMap utilizing a for-each loop.

Note: Utilize the keySet() method for keys only, and the values() method for values only.

Example

// Print keys
for (String i : capitalCities.keySet()) {
  System.out.println(i);

Example

// Print values
for (String i : capitalCities.values()) {
  System.out.println(i);
}

Example

// Print keys and values
for (String i : capitalCities.keySet()) {
  System.out.println("key: " + i + " value: " + capitalCities.get(i));
}