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Fixed old blog posts

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Brandon Rozek 2021-10-10 23:50:45 -04:00
parent 2489aa163b
commit 4f2a4a063d
2 changed files with 28 additions and 159 deletions
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83
content/blog/2017-08-28-escape-sequences-java.md
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@ -23,76 +23,15 @@ kind:
--- ---
Sometimes you want to format your outputs. This is a quick cheatsheet containing the differerent escape sequences Sometimes you want to format your outputs. This is a quick cheatsheet containing the differerent escape sequences
| Character | Escape Sequence |
| ------------ | --------------- |
| Newline | \n |
| Tab | \t |
| Backspace | \b |
| Double Quote | \” |
| Single Quote | \’ |
| Backslash | \\ |
   
<table class="tg">
<tr>
<th class="tg-yw4l">
Character
</th>
<th class="tg-yw4l">
Escape Sequence
</th>
</tr>
<tr>
<td class="tg-yw4l">
Newline
</td>
<td class="tg-yw4l">
\n
</td>
</tr>
<tr>
<td class="tg-yw4l">
Tab
</td>
<td class="tg-yw4l">
\t
</td>
</tr>
<tr>
<td class="tg-yw4l">
Backspace
</td>
<td class="tg-yw4l">
\b
</td>
</tr>
<tr>
<td class="tg-yw4l">
Double Quote           
</td>
<td class="tg-yw4l">
\&#8221;
</td>
</tr>
<tr>
<td class="tg-yw4l">
Single Quote
</td>
<td class="tg-yw4l">
\&#8217;
</td>
</tr>
<tr>
<td class="tg-yw4l">
Backslash
</td>
<td class="tg-yw4l">
\\
</td>
</tr>
</table>

108
content/blog/2017-08-28-obtaining-command-line-input-java.md
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@ -21,110 +21,40 @@ mf2_mp-syndicate-to:
kind: kind:
- note - note
--- ---
To obtain console input for your program you can use the <code class="language-java">Scanner</code> class To obtain console input for your program you can use the `Scanner` class
First import the relevant library First import the relevant library
<pre class="language-java"><code class="language-java"> ```java
import java.util.Scanner; import java.util.Scanner;
</code></pre> ```
Then create a variable to hold the <code class="language-java">Scanner</code> object Then create a variable to hold the `Scanner` object
<pre class="language-java"><code class="language-java"> ```java
Scanner input; Scanner input;
input = new Scanner(System.in); input = new Scanner(System.in);
</code></pre> ```
Inside the parenthesis, the <code class="language-java">Scanner</code> binds to the System input which is by default the console Inside the parenthesis, the `Scanner` binds to the System input which is by default the console
The new varible <code class="language-java">input</code> now has the ability to obtain input from the console. To do so, use any of the following methods The new varible `input` now has the ability to obtain input from the console. To do so, use any of the following methods:
<table class="tg"> | Method | What it Returns |
<tr> | -------------- | ---------------------------------------------------------- |
<th class="tg-yw4l"> | `next()` | The next space separated string from the console |
Method | `nextInt()` | An integer if it exists from the console |
</th> | `nextDouble()` | A double if it exists from the console |
| `nextFloat()` | A float if it exists from the console |
| `nextLine()` | A string up to the next newline character from the console |
| `hasNext()` | Returns true if there is another token |
| `close()` | Unbinds the Scanner from the console |
<th class="tg-yw4l">
What it Returns
</th>
</tr>
<tr>
<td class="tg-yw4l">
next()
</td>
<td class="tg-yw4l">
The next space seperated string from the console
</td>
</tr>
<tr>
<td class="tg-yw4l">
nextInt()
</td>
<td class="tg-yw4l">
An integer if it exists from the console
</td>
</tr>
<tr>
<td class="tg-yw4l">
nextDouble()             
</td>
<td class="tg-yw4l">
A double if it exists from the console
</td>
</tr>
<tr>
<td class="tg-yw4l">
nextFloat()
</td>
<td class="tg-yw4l">
A float if it exists from the console
</td>
</tr>
<tr>
<td class="tg-yw4l">
nextLine()
</td>
<td class="tg-yw4l">
A string up to the next newline character from the console
</td>
</tr>
<tr>
<td class="tg-yw4l">
hasNext()
</td>
<td class="tg-yw4l">
Returns true if there is another token
</td>
</tr>
<tr>
<td class="tg-yw4l">
close()
</td>
<td class="tg-yw4l">
Unbinds the Scanner from the console
</td>
</tr>
</table>
Here is an example program where we get the user&#8217;s first name Here is an example program where we get the user&#8217;s first name
<pre class="language-java"><code class="language-java"> ```java
import java.util.Scanner; import java.util.Scanner;
public class GetName { public class GetName {
@ -135,4 +65,4 @@ public class GetName {
System.out.println("Your first name is " + firstName); System.out.println("Your first name is " + firstName);
} }
} }
</code></pre> ```