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Issue 298 fixes: comment added to 6.2 #306

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Issue 298 fixes: comment added to 6.2 #306

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d15068b
added comments to code
habibasorour Jul 31, 2026
a34caa9
added an idx tag
habibasorour Jul 31, 2026
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5 changes: 3 additions & 2 deletions source/ch6_definingclasses.ptx
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Original file line number Diff line number Diff line change
Expand Up @@ -196,6 +196,7 @@ public void setDenominator(Integer denominator) {
<title>Writing a constructor</title>

<p>
<idx>constructor</idx>
Once you have identified the instance variables for your class the next thing to consider is the constructor.
In Java, <term>constructors</term> have the same name as the class and are declared public.
They are declared without a return type.
Expand All @@ -207,7 +208,7 @@ public void setDenominator(Integer denominator) {
<program xml:id="java-fraction-constructor" language="java">
<code>
public Fraction(Integer top, Integer bottom) {
num = top;
num = top; // notice the use of num instead of top
den = bottom;
}
</code>
Expand All @@ -228,7 +229,7 @@ public Fraction(Integer top, Integer bottom) {
<program xml:id="java-fraction-class-this" language="java">
<code>
public Fraction(Integer num, Integer den) {
this.num = num;
this.num = num; // notice how we use this.num instead of num
this.den = den;
}
</code>
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