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Some more small changes that don't affect semantics.
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@ -31,17 +31,17 @@ import java.security.*;
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// the file.
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public class LearnJava {
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// A program must have a main method as an entry point
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// A program must have a main method as an entry point.
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public static void main (String[] args) {
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// Use System.out.println to print lines
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// Use System.out.println() to print lines.
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System.out.println("Hello World!");
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System.out.println(
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"Integer: " + 10 +
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" Double: " + 3.14 +
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" Boolean: " + true);
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// To print without a newline, use System.out.print
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// To print without a newline, use System.out.print().
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System.out.print("Hello ");
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System.out.print("World");
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@ -69,7 +69,7 @@ public class LearnJava {
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// L is used to denote that this variable value is of type Long;
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// anything without is treated as integer by default.
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// Note: Java has no unsigned types
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// Note: Java has no unsigned types.
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// Float - Single-precision 32-bit IEEE 754 Floating Point
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float fooFloat = 234.5f;
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@ -86,7 +86,7 @@ public class LearnJava {
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// Char - A single 16-bit Unicode character
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char fooChar = 'A';
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// final variables can't be reassigned to another object
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// final variables can't be reassigned to another object.
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final int HOURS_I_WORK_PER_WEEK = 9001;
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// Strings
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@ -123,7 +123,7 @@ public class LearnJava {
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// Others to check out
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// ArrayLists - Like arrays except more functionality is offered, and
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// the size is mutable
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// the size is mutable.
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// LinkedLists - Implementation of doubly-linked list. All of the
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// operations perform as could be expected for a
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// doubly-linked list.
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@ -160,13 +160,13 @@ public class LearnJava {
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// Bitwise operators!
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/*
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~ Unary bitwise complement
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<< Signed left shift
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>> Signed right shift
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>>> Unsigned right shift
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& Bitwise AND
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^ Bitwise exclusive OR
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| Bitwise inclusive OR
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~ Unary bitwise complement
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<< Signed left shift
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>> Signed right shift
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>>> Unsigned right shift
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& Bitwise AND
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^ Bitwise exclusive OR
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| Bitwise inclusive OR
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*/
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// Incrementations
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@ -218,7 +218,7 @@ public class LearnJava {
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// For Loop
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int fooFor;
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// for loop structure => for(<start_statement>; <conditional>; <step>)
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for(fooFor = 0; fooFor < 10; fooFor++){
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for (fooFor = 0; fooFor < 10; fooFor++) {
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System.out.println(fooFor);
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// Iterated 10 times, fooFor 0->9
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}
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@ -226,12 +226,12 @@ public class LearnJava {
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// For Each Loop
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// An automatic iteration through an array or list of objects.
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int[] fooList = {1,2,3,4,5,6,7,8,9};
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// for each loop structure => for(<object> : <array_object>)
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int[] fooList = {1, 2, 3, 4, 5, 6, 7, 8, 9};
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// for each loop structure => for (<object> : <array_object>)
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// reads as: for each object in the array
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// note: the object type must match the array.
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for (int bar : fooList){
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for (int bar : fooList) {
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System.out.println(bar);
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//Iterates 9 times and prints 1-9 on new lines
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}
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