ID, and returns the <code>Employee</code> object with the specified ID. This 
    method returns <code>null</code> if there are no employees in the specified 
    array with the specified ID.</li>
</ul>
<blockquote> 
  <p>For example, consider the following array:</p>

  <blockquote> 
    <pre>{Employee[102,Mary Jones,60000.0],
 Employee[101,Joe Smith,20000.0],
 Employee[103,Richard Wong,40000.0]}</pre>
  </blockquote>
  <p>If <code>getEmployee</code> is passed this array and the integer <code>103</code>, 
    it will return the <code>Employee</code> object for Richard Wong. If <code>getEmployee</code> 
    is passed this array and the integer <code>222</code>, it will return <code>null</code>. 

</p></blockquote>
<ol start="6">
  <li><strong>Implement</strong> the method <code>countHigherSalaries</code>.  Use a <code>for-each</code> loop to implement this method.</li>
</ol>
<ul>
  <li><code><em>public static int countHigherSalaries(Employee[] array, double 
    amount)</em></code>. This method takes two arguments, an <code>Employee</code> 
    array and a dollar amount, and returns the number of employees in the specified 
    array whose salary is higher than the specified dollar amount.</li>

</ul>
<blockquote> 
  <p>For example, consider the following array:</p>
  <blockquote> 
    <pre>{Employee[102,Mary Jones,60000.0],
 Employee[101,Joe Smith,20000.0],
 Employee[103,Richard Wong,40000.0]}</pre>
  </blockquote>
  <p>If <code>countHigherSalaries</code> is passed this array and the double <code>50000.0</code>, 
    it will return <code>1</code>. If <code>countHigherSalaries</code> is passed 
    this array and the double <code>20000.0</code>, it will return <code>2</code>. 
  </p>

</blockquote>
<ol start="7">
  <li><strong>Implement</strong> the method <code>sumSalaries</code>.  Use a <code>for-each</code> loop to implement this method.</li>
</ol>
<ul>
  <li><code><em>public static double sumSalaries(Employee[] array)</em></code>. 
    This method takes an <code>Employee</code> array and returns the sum of the 
    salaries of the employees in the specified array.</li>

</ul>
<blockquote> 
  <p>For example, consider the following array:</p>
  <blockquote> 
    <pre>{Employee[102,Mary Jones,60000.0],
 Employee[101,Joe Smith,20000.0],
 Employee[103,Richard Wong,40000.0]}</pre>
  </blockquote>
  <p>If <code>sumSalaries</code> is passed this array, it will return <code>120000.0</code>. 
  </p>

</blockquote>
<ol start="8">
  <li><strong>Implement</strong> the method <code>getHighestSalary</code>. Use indexes to implement this method.</li>
</ol>
<ul>
  <li><code><em>public static double getHighestSalary(Employee[] array)</em></code>. 
    This method takes an <code>Employee</code> array and returns the highest salary 
    in the specified array. To simplify your code, you can assume that the specified 
    array contains one or more elements. </li>

</ul>
<blockquote> 
  <p>For example, consider the following array:</p>
</blockquote>
<ol start="8">
  <blockquote> 
    <pre>{Employee[102,Mary Jones,60000.0],
 Employee[101,Joe Smith,20000.0],
 Employee[103,Richard Wong,40000.0]}</pre>
  </blockquote>
</ol>
<blockquote> 
  <p>If this array is passed to <code>getHighestSalary</code>, it will return 
    <code>60000.0</code>. </p>

</blockquote>
<ol start="9">
  <li><strong>Implement</strong> the method <code>increaseAll</code>.  Use a <code>for-each</code> loop to implement this method.</li>
</ol>
<ul>
  <li><code><em>public static void increaseAll(Employee[] array, double amount)</em></code>. 
    This method takes two arguments, an <code>Employee</code> array and a dollar 
    amount, and increases the salary of every employee in the specified array 
    by the specified amount. </li>

</ul>
<blockquote> 
  <p>For example, consider the following array:</p>
</blockquote>
<ol start="8">
  <blockquote> 
    <pre>{Employee[102,Mary Jones,60000.0],
 Employee[101,Joe Smith,20000.0],
 Employee[103,Richard Wong,40000.0]}</pre>
  </blockquote>
</ol>
<blockquote> 
  <p>If <code>increaseAll</code> is passed this array and the integer <code>1000</code>, 
    the array will be modified as follows:</p>

</blockquote>
<ol start="8">
  <blockquote> 
    <pre>{Employee[102,Mary Jones,61000.0],
 Employee[101,Joe Smith,21000.0],
 Employee[103,Richard Wong,41000.0]}</pre>
  </blockquote>
</ol>
<ol start="10">
  <li><strong>Implement</strong> the method <code>displayAll</code>. Use indexes to implement this method.</li>

</ol>
<ul>
  <li><code><em>public static String displayAll(Employee[] array)</em></code>. 
    This method takes an <code>Employee</code> array and returns a string representation 
    of the specified array. To simplify your code, you can assume that every element 
    in the specified array contains a valid reference to an <code>Employee</code> 
    object. </li>
</ul>
<blockquote>
  <p>Use the method <code>toString</code> in the class <code>Employee</code> to 
    obtain the string representation of each object in the array. A new line character 
    ( <code>\n</code> ) should separate the string representations of each <code>Employee</code> 
    object.</p>

  <p>For example, consider the following array:</p>
</blockquote>
<ol start="10">
  <blockquote> 
    <pre>{Employee[102,Mary Jones,61000.0],
 Employee[103,Richard Wong,41000.0]}</pre>
  </blockquote>
</ol>
<blockquote>
  <p> If this array is passed to <code>displayAll</code>, the following string 
    will be returned: </p>

</blockquote>
<blockquote>
  <pre>	"Employee[102,Mary Jones,61000.0]\nEmployee[103,Richard Wong,41000.0]"</pre>
</blockquote>
<blockquote>
  <p>Note that the string does <em>not</em> end with a new line character ( <code>\n</code> 
    ). </p>

</blockquote>
<h3>Submission</h3>
<p>Upon completion, submit <strong>only</strong> the following.</p>
<ol>
  <li><code>EmployeeArray.java</code></li>
</ol>
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