The life of TB

# Animal.java public class Animal { private String name; public Animal(String name) {this.name = name; } public String getName() {return name; } public String say() {return "unknown"; }} # Dog.java public class Dog extends Animal { public Dog(String name) {super(name); } @Override public String say() {return "waf! waf!"; }} # Main.java public class Main { public static void main(String[] args) {..

Java 2016. 7. 13. 19:02

import java.util.ArrayList;import java.util.Iterator; public class Main { public static ArrayList al = new ArrayList(); public static void main(String[] args) { al.add("a");al.add("b");al.add("c"); // enhancedForLoop(); // iteratorForLoop(); // iteratorWhileLoop(); // whileLoopIndex(); } private static void iteratorWhileLoop() {Iterator itr = al.iterator();while (itr.hasNext()) { System.out.prin..

Java 2016. 7. 13. 11:25

# Wildcards in Parameters - - unknown type-

Java 2016. 7. 12. 20:55

# Animal.java public class Animal { private String name; public Animal() { } public Animal(String name) {this.name = name; } public String getName() {return name; } @Override public String toString() {return String.format("%s\n", this.name); } @Override public boolean equals(Object obj) {if (obj == null) { return false;} if (!(obj instanceof Animal)) { return false;} return (this.getName().equal..

Java 2016. 7. 10. 11:37

# Animal.java public class Animal implements Comparable { private String name; public Animal() { } public Animal(String name) {this.name = name; } public String getName() {return name; } @Override public String toString() {return String.format("%s\n", this.name); } @Override public boolean equals(Object obj) {if (obj == null) { return false;} if (!(obj instanceof Animal)) { return false;} return..

Java 2016. 7. 10. 10:06

# Animal.java public class Animal { private String name; public Animal() { } public Animal(String name) {this.name = name; } public String getName() { return name; } @Override public String toString() { return String.format("%s, %s\n", getClass(), this.name); } @Override public boolean equals(Object obj) {if (obj == null) { return false;}if (!(obj instanceof Animal)) { return false;}return (this..

Java 2016. 7. 8. 21:59

package GenericMethods; import java.util.Random; public class Driver { private static final int SIZE = 10; public static void main(String[] args) {// we CANT'Y use primitive types in Generics!Integer[] myInts;myInts = new Integer[SIZE];Random r = new Random();for (int i = 0; i < myInts.length; i++) { myInts[i] = r.nextInt(SIZE);}for (Integer myInt : myInts) { System.out.println(myInt);} swapItem..

Java 2016. 7. 8. 21:45

# Button.java package InnerClasses; public class Button{private String title;private OnClickListener onClickListener; public Button(String title){this.title = title;} public String getTitle(){return title;} public void setOnClickListener (OnClickListener onClickListener){this.onClickListener = onClickListener;}public void onClick(){this.onClickListener.onClick(this.title);}public interface OnCli..

Java 2016. 7. 5. 21:04