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[Spatial Partition] (Fix) Issue #2544: Can not run App.java & some logs are wrong (#2545)

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* [Spatial Partition] (Fix) Issue #2544

- ConcurrentModificationException
- Wrong log
- Log using formatting anchor

* [Spatial Partition] (Change) Hashtable to Map, (Remove) unused variable BUBBLE
This commit is contained in:
Tien Nguyen Minh
2023-08-20 14:28:05 +07:00
committed by GitHub
parent c769c73e91
commit 2154e777b6
6 changed files with 27 additions and 28 deletions
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spatial-partition/src/main/java/com/iluwatar/spatialpartition/App.java
+12 -13
View File
@@ -25,7 +25,8 @@
package com.iluwatar.spatialpartition;
import java.security.SecureRandom;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import lombok.extern.slf4j.Slf4j;
/**
@@ -59,9 +60,8 @@ import lombok.extern.slf4j.Slf4j;
@Slf4j
public class App {
private static final String BUBBLE = "Bubble ";
static void noSpatialPartition(int numOfMovements, HashMap<Integer, Bubble> bubbles) {
static void noSpatialPartition(int numOfMovements, Map<Integer, Bubble> bubbles) {
//all bubbles have to be checked for collision for all bubbles
var bubblesToCheck = bubbles.values();
@@ -77,11 +77,11 @@ public class App {
numOfMovements--;
}
//bubbles not popped
bubbles.keySet().stream().map(key -> BUBBLE + key + " not popped").forEach(LOGGER::info);
bubbles.keySet().forEach(key -> LOGGER.info("Bubble {} not popped", key));
}
static void withSpatialPartition(
int height, int width, int numOfMovements, HashMap<Integer, Bubble> bubbles) {
int height, int width, int numOfMovements, Map<Integer, Bubble> bubbles) {
//creating quadtree
var rect = new Rect(width / 2D, height / 2D, width, height);
var quadTree = new QuadTree(rect, 4);
@@ -100,7 +100,7 @@ public class App {
numOfMovements--;
}
//bubbles not popped
bubbles.keySet().stream().map(key -> BUBBLE + key + " not popped").forEach(LOGGER::info);
bubbles.keySet().forEach(key -> LOGGER.info("Bubble {} not popped", key));
}
/**
@@ -110,15 +110,15 @@ public class App {
*/
public static void main(String[] args) {
var bubbles1 = new HashMap<Integer, Bubble>();
var bubbles2 = new HashMap<Integer, Bubble>();
var bubbles1 = new ConcurrentHashMap<Integer, Bubble>();
var bubbles2 = new ConcurrentHashMap<Integer, Bubble>();
var rand = new SecureRandom();
for (int i = 0; i < 10000; i++) {
var b = new Bubble(rand.nextInt(300), rand.nextInt(300), i, rand.nextInt(2) + 1);
bubbles1.put(i, b);
bubbles2.put(i, b);
LOGGER.info(BUBBLE, i, " with radius ", b.radius,
" added at (", b.coordinateX, ",", b.coordinateY + ")");
LOGGER.info("Bubble {} with radius {} added at ({},{})",
i, b.radius, b.coordinateX, b.coordinateY);
}
var start1 = System.currentTimeMillis();
@@ -127,8 +127,7 @@ public class App {
var start2 = System.currentTimeMillis();
App.withSpatialPartition(300, 300, 20, bubbles2);
var end2 = System.currentTimeMillis();
LOGGER.info("Without spatial partition takes ", (end1 - start1), "ms");
LOGGER.info("With spatial partition takes ", (end2 - start2), "ms");
LOGGER.info("Without spatial partition takes {} ms", (end1 - start1));
LOGGER.info("With spatial partition takes {} ms", (end2 - start2));
}
}