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Commit 5ec9f9b

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author
Bruce Eckel
committed
new appendix
1 parent 5d0f0fe commit 5ec9f9b

28 files changed

+328
-172
lines changed

‎collectiontopics/Bits.java‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -14,7 +14,7 @@ public static void printBitSet(BitSet b) {
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System.out.println("bit pattern: " + bbits);
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}
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public static void main(String[] args) {
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SplittableRandom rand = new SplittableRandom(47);
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Random rand = new Random(47);
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// Take the LSB of nextInt():
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byte bt = (byte)rand.nextInt();
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BitSet bb = new BitSet();

‎collectiontopics/CanonicalMapping.java‎

Lines changed: 3 additions & 1 deletion
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@@ -11,7 +11,9 @@ class Element {
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@Override
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public String toString() { return ident; }
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@Override
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public int hashCode() { return ident.hashCode(); }
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public int hashCode() {
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return Objects.hashCode(ident);
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}
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@Override
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public boolean equals(Object r) {
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return r instanceof Element &&

‎collectiontopics/Prediction.java‎

Lines changed: 0 additions & 18 deletions
This file was deleted.

‎collectiontopics/SpringDetector.java‎

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This file was deleted.

‎collectiontopics/SpringDetector2.java‎

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This file was deleted.

collectiontopics/ComposedEquality.java renamed to equalshashcode/ComposedEquality.java

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@@ -1,4 +1,4 @@
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// collectiontopics/ComposedEquality.java
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// equalshashcode/ComposedEquality.java
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// (c)2017 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.

collectiontopics/CountedString.java renamed to equalshashcode/CountedString.java

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@@ -1,4 +1,4 @@
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// collectiontopics/CountedString.java
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// equalshashcode/CountedString.java
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// (c)2017 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
@@ -41,8 +41,7 @@ public boolean equals(Object o) {
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Objects.equals(id, ((CountedString)o).id);
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}
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public static void main(String[] args) {
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Map<CountedString,Integer> map =
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new HashMap<>();
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Map<CountedString,Integer> map = new HashMap<>();
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CountedString[] cs = new CountedString[5];
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for(int i = 0; i < cs.length; i++) {
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cs[i] = new CountedString("hi");

‎equalshashcode/DefaultComparison.java‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,24 @@
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// equalshashcode/DefaultComparison.java
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// (c)2017 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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class DefaultComparison {
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private int i, j, k;
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public DefaultComparison(int i, int j, int k) {
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this.i = i;
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this.j = j;
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this.k = k;
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}
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public static void main(String[] args) {
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DefaultComparison
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a = new DefaultComparison(1, 2, 3),
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b = new DefaultComparison(1, 2, 3);
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System.out.println(a == a);
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System.out.println(a == b);
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}
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}
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/* Output:
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true
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false
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*/

collectiontopics/Equality.java renamed to equalshashcode/Equality.java

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@@ -1,4 +1,4 @@
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// collectiontopics/Equality.java
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// equalshashcode/Equality.java
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// (c)2017 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.

collectiontopics/EqualityFactory.java renamed to equalshashcode/EqualityFactory.java

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@@ -1,4 +1,4 @@
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// collectiontopics/EqualityFactory.java
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// equalshashcode/EqualityFactory.java
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// (c)2017 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.

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