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TurkuBasicOOPinJava / Week 6: Methods of OO Programming

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if (obj1 instanceof Class1) { countClass1++; }

69d533f verified 5 months ago

01A. Static members [= CLASS MEMBER, not object member]

5.13 kB

public static dtype method1(param1) {...} 5 months ago
01B. Class StringHelper

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public static int method1(dtype param1) 5 months ago
02. Class SecretAgent

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if (staticMethod2(param1)) {...} 5 months ago
03A. Class variables = STATIC VARIABLES

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public static dtype STATICVARIABLEINCAPS = <value>; 5 months ago
03B. Nordic countries as class variables

728 Bytes

public static String FINLAND = "FI"; 5 months ago
04. Fish within permitted limits

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this.attribute1 >= Class2.PUBLICSTATICATTRIBUTE2 5 months ago
05A. Interfaces+++

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interface INTERFACE1 {dtype method1();} 5 months ago
05B. Write an interface class Calculator

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void add(int number); double getResult(); 5 months ago
06. The Calculator implements an interface

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@Override public void add(int number) {this.result += number;} 5 months ago
07A. Interface 'Comparable' [compareTo method]+++

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int/double, str (alphabetical) 5 months ago
07B. Determine the Longest Route

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@Override public int compareTo(Route other) 5 months ago
08. Comparable Point

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condition compares using double, then return int 5 months ago
09 Polymorphism+++

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reusable method for SUPERCLASS n SUBCLASSES, ArrayList, SUPERCLASS METHOD 5 months ago
09B. Oldest Fairy Tale Character

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Create 09B. Oldest Fairy Tale Character 5 months ago
10A. Interface Class as Variable Type+++

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public static Priced mostExpensive(ArrayList<Priced> list) {...} 5 months ago
10B. How Many Can Fit in a Container?

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public static int howManyFit(Container largeContainer, Container smallContainer) {...} 5 months ago
11A. TYPE Conversions OR CASTING+++

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int approximation = (int) height; 5 months ago
11B. Calculate the Total Load of Trucks

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SubClass1 subClassVar1 = (SubClass1) superClassVar1; 5 months ago
12A. Dynamic Binding+++

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FIND LATEST IMPLEMENTED METHOD vs instanceof vs getClass [OBJECT TYPE] 5 months ago
12B. Count the Wizards [instanceof]

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if (obj1 instanceof Class1) { countClass1++; } 5 months ago