In this article, we will explorehow to Iterate through a Map in Java.We will start with a simple use case and will explore how we can do this using Java 8 Stream API. How to Iterate Through a Map in Java Iterat
3.1. Iterating UsingMap.keySet()andMap.get() Alternatively, we can use thekeySet()method of theMapinterface to retrieve aSetthat contains all the keys in theMap. We can then iterate through thisSet, and for each key, fetch the corresponding value using theget()method: for(Map<String, O...
Iterate through a HashMap EntrySet using Iterators. Iterate through HashMap KeySet using Iterator. Iterate HashMap using for-each loop. Iterating through a HashMap using Lambda Expressions. Loop through a HashMap using Stream API.Method 1: Using a for loop to iterate through a HashMap. Ite...
Step 8 Print the key-value pair of the current entry using System.out.println. Step 9 End the loop, the main method, and the Tutorialspoint class.ExampleOpen Compiler import java.util.HashMap; import java.util.Map; public class Tutorialspoint{ public static void main(String[] args){ Map...
Step 7 If there are more entries, then retrieve the next entry using the next() method. Step 8 Print the output.ExampleOpen Compiler // Iterating over linkedHashMap by employing entrySet() and iterator import java.util.Iterator; import java.util.LinkedHashMap; import java.util.Set; public...
常用iterate 方法 1Map<Integer, String> m =newHashMap<Integer, String>();2for(Map.Entry<Integer, String>entry : m.entrySet()){3System.out.println("Key: " + entry.getKey() + ", Value: " +entry.getValue());4}567Iterator<Map.Entry<Integer, String>> iterator =m.entrySet().iterator...
使用Stream API遍历HashMap 示例代码如下 package imoocStudy; import java.util.HashMap; import java.util.Iterator; import java.util.Map; public class HashMapExample { public static void main(String[] args) { Map<Integer,String> namesMap = new HashMap<Integer, String>(); ...
How to Iterate Map in Java Java ListResourceBundle Java Collections.rotate() JarOutputStream in Java Collections.emptyMap and Collections.emptySet in Java Collections.disjoint in Java Java Charset Example JarInputStream in Java Add Manifest into JAR File Using Java EnumSet in Java Custom ClassLoader ...
a hash map in Java? How do I iterate a hash map in Java?How do I iterate a hash map in Java?Brian L. Gorman
2.1.iterate()in Java 8 This example generates the first 10 numbers of the Fibonacci sequence usingiterateandlimitmethods. Stream<Integer>fibonacci=Stream.iterate(newint[]{0,1},t->newint[]{t[1],t[0]+t[1]}).limit(10)// Limit to avoid infinite stream.map(t->t[0]);fibonacci.forEach...