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issue 381: parson added question in 4.2 #382

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pearcej merged 1 commit into from
Aug 7, 2026
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issue 381: parson added question in 4.2 #382

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51 changes: 51 additions & 0 deletions source/ch4_conditionals.ptx
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Original file line number Diff line number Diff line change
Expand Up @@ -401,6 +401,57 @@ public class Ternary {
<p>
In <xref ref="java-ternary" text="type-global"/>, we are using this ternary operator to assign a value to <c>a</c> based on whether <c>a</c> is even or odd. If <c>a</c> is even, it will be squared; if odd, it will be instead be calculated as <c>3 * x - 1</c>. This is a concise way to write conditional assignments in Java. However, you might want to use it sparingly, as it can make code less readable if overused or used with complex expressions.
</p>

<exercise label="java_conditionals_ternary_parsons">
<statement>
<p>
Rearrange the blocks to create a Java method that calculates shipping costs. Orders over $100 get free shipping ($0.0), while members pay $5.0 and non-members pay $10.0.
</p>
</statement>
<blocks>
<block order="1">
<choice correct="yes">
<cline>public double calculateShipping(double orderTotal, boolean isMember) {</cline>
</choice>
<choice correct="no">
<cline>public double calculateShipping()
double orderTotal
boolean isMember
{</cline>
</choice>
</block>

<block order="2">
<choice correct="yes">
<cline> if (orderTotal &gt;= 100.0) {</cline>
<cline> return 0.0;</cline>
<cline> }</cline>
</choice>
<choice correct="no">
<cline> if (orderTotal = 100.0) {</cline>
<cline> return 0.0;</cline>
<cline> }</cline>
</choice>
</block>

<block order="3">
<choice correct="yes">
<cline> else {</cline>
<cline> return isMember ? 5.0 : 10.0;</cline>
<cline> }</cline>
</choice>
<choice correct="no">
<cline> else {</cline>
<cline> return isMember : 5.0 ? 10.0;</cline>
<cline> }</cline>
</choice>
</block>

<block order="4">
<cline>}</cline>
</block>
</blocks>
</exercise>
</section>

<section xml:id="exception-handling">
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