interface Animal { void shout (); } public class Example23 { public static void main (String[] args) { String name = "小花"; animalShout (new Animal(){ @Override public void shout(){ System.out.println(name+"喵喵......"); } }); } public static void animalShout (Animal an){ an.shout(); } }

public class Example29 { public static void main (String[] args) { int[] arr ={9 , 8 , 3 , 5 , 2}; System.out.print("冒泡排序前 :"); printArray (arr); bubbleSort (arr); System.out.print("冒泡排序后:"); printArray (arr); } public static void printArray (int[] arr) { for (int i = 0; i< arr.length; i++) { System.out.print(arr[i] +""); } System.out.print("\n"); } public static void bubbleSort (int[] arr) { for (int i = 0; i< 网页链接 - 1; i++){ for (int j = 0; j < 网页链接 - i -1; j++) { if (arr[j] > arr[j + 1]) ;{ int temp = ar

class Student { private String name; private int age; public Student () { } public Student(String n) { name = n; } public Student (String n, int a) { name = n; age = a; } public void read() { System.out.println("我是:"+name+",年龄:"+age); } } public class Example07 { public static void main (String[] args) { Student stu1 = new Student("张三"); Student stu2 = new Student("张三",18); stu1.read(); stu2.read(); } }

abstract class Animal { abstract void shout (); } class Cat extends Animal { public void shout () { System.out.println("喵喵......"); } } class Dog extends Animal { public void shout () { System.out.println("汪汪......"); } } public class Example14 { public static void main (String[] args) { Animal an1 = new Cat () ; Animal an2 = new Dog () ; an1.shout(); an2.shout(); } }

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