随笔分类 -  JAVASE

摘要：package com.zhao.day3;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.Set;public class MapTest5 {public static void main(String[] args) {HashMap map = new HashMap();map.put("a", "aa");map.put("b", "bb");map.put("c& 阅读全文

摘要：public static int binarySearch(int[] array, int value){int low = 0;int high = array.length - 1;int middle;while(low <= high){middle = (low + high) / 2;if(array[middle] == value){return middle;}if(value < array[middle]){high = middle - 1;}if(value > array[middle]){low = middle + 1;}}return - 阅读全文

摘要：package com.zhao.day2;public class SingletoTest {public static void main(String[] args) {Singleton singleton = Singleton.getInstance();Singleton singleton2 = Singleton.getInstance();System.out.println(singleton == singleton2);}}class Singleton {private static Singleton singleton = new Singleton(); p 阅读全文

摘要：IntroductionMy wife Farhana wants to resume her career as a software developer (she started her career as a software developer, but couldn't proceed much because of our first child's birth), and these days, I am trying to help her learn Object Oriented Designs as I've got some experience 阅读全文

摘要：字符串String 集合Collection异常相关exception 设计模式 Design Pattern反射相关 Reflection 相等性 equals hashCode线程相关 Thread多态 Polymorphism数组Array字符串：代码如下String s = new String("abc");String s1 = "abc";String s2 = new String("abc");system.out.println(s == s1);system.out.println(s == s2);system 阅读全文