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this.attribute1 >= Class2.PUBLICSTATICATTRIBUTE2
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Week 6: Methods of OO Programming/04. Fish within permitted limits
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Once upon a time there was a fishing competition.
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In the category 'FishMeasurements', the minimum and maximum length and weight of fish allowed in the competition are defined as category variables.
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The 'Fish' class models a single fish.
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The class has attributes length and weight.
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For the Fish class, write the public method
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public boolean allowed()
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which returns true or false depending on whether the given Fish object is within the allowed limits in a competition.
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import java.util.Random;
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public class Test{
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public static void main(String[] args){
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final Random rnd = new Random();
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System.out.println("Testing the method allowed...");
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for (int i=0; i<10; i++){
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Fish fish = new Fish(rnd.nextInt(80) + 10, rnd.nextInt(7) + rnd.nextDouble());
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System.out.println("" + fish);
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System.out.println(fish.allowed() ? "Allowed" : "Not allowed");
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}
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}
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}
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class FishMeasurements{
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public static final int MINIMUM_LENGTH = 25;
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public static final int MAXIMUM_LENGTH = 75;
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public static final double MINIMUM_WEIGHT = 1.0;
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public static final double MAXIMUM_WEIGHT = 5.0;
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}
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class Fish{
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private int length;
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private double weight;
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public Fish(int length, double weight){
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this.length = length;
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this.weight = weight;
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}
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// ADD
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public boolean allowed() {
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boolean allowed = false;
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if (this.length >= FishMeasurements.MINIMUM_LENGTH &&
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this.length <= FishMeasurements.MAXIMUM_LENGTH &&
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this.weight >= FishMeasurements.MINIMUM_WEIGHT &&
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this.weight <= FishMeasurements.MAXIMUM_WEIGHT) {
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allowed = true;
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}
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return allowed;
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}
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public String toString(){
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return "Length:" + length + ", weight:" + weight;
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}
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}
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Testing the method allowed...
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Length:22, weight:1.692058179594544
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Not allowed
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Length:26, weight:0.5860256329845314
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Not allowed
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Length:85, weight:3.3517439256862196
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Not allowed
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Length:33, weight:3.5979307720496427
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Allowed
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Length:77, weight:5.786405319523382
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Not allowed
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Length:35, weight:2.368043874796682
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Allowed
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Length:58, weight:4.67477898551802
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Allowed
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Length:50, weight:5.1839866609623915
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Not allowed
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Length:44, weight:3.8234901017754215
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Allowed
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Length:12, weight:1.6789547620765946
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Not allowed
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