Another good Java interview question, I think answer is not sufficient but here it is “Substring creates new object out of source string by taking a portion of original string”. see my post How SubString works in Java for detailed answer of this Java question. 5. Which two method you ne...
Another great question which requires knowledge ofSerialization in Javaand how to use it for persisting Singleton classes. This is open to you all but in my opinion use of readResolve() method can sort this out for you. Answer: You can prevent this by using readResolve() method, since dur...
package javaPractice;public class TheFeet { / 兔子和鸡共十三个头,四十只脚,问多少鸡和兔子,java解决 / public static void main(String[] args) { int rabbit = 0;// 兔子的数量 int chicken = 0;// 鸡的数量 for (rabbit = 1; rabbit <= 13; rabbit++) { for (chicken = 0; c...
Java从入门到进阶,我会推荐这8本书,而且这份书单已经获得2500+的赞和收藏,是知乎热门内容。 除了推荐书籍外,第2部分还会分享本人自学Java并拿到阿里巴巴校招offer的方法论。 本回答字数长达1万+,建议点赞收藏防止迷路~ 下面是书籍推荐的原回答链接: 先贴一张Java技术栈的全局图: Java的核心难点在于知识点太多,如果...
package com.practice; public class YangHuiSanJiao { public static void main(String[] args) { int [][]a = new int [10][10]; for(int n = 0; n < 10;n++) { a[n][0] = 1; a[n][n] = 1; } for(int n = 2; n <10; n++) { ...
package com.practice;import java.util.Scanner;public class Resource {public static void main(String[] args) {Scanner in = new Scanner(System.in);System.out.print("输入2013年的一个月份");int num = in.nextInt();int day = 0; // 当月天数int count = 0; // 记录循环次数switch...
package practice;/ 使用while循环 计算1+1/2!+1/3!+...+1/20!a用于存储前n个阶乘分之一 sum 用于累加和 / public class WhileDemo { public static void main(String[] args) { /*i=i+1的简写形式是i+=1;但是二者有本质的区别:如果 i是short类型,+=:会自动类型提升，而=则不会 所...
百度试题 结果1 题目根据目录结构myjava\practice1\Foo.java,写出Foo类的包名 相关知识点: 试题来源: 解析 包名应为package myjava.practice1 反馈 收藏
public class Practice5 {public static void main(String[] args) {long sum = 0, c;for (int i = 1; i <= 20; i++) {c = 1;for (int b = 1; b <= i; b++) {c *= b;}sum += c;}System.out.println("1到20的阶乘和等于" + sum);}}单个for循环的：public class...
解释写在注释里面：public class Finallypractice { public static void main(String[] args) { ArrayList<String> a = new ArrayList<String>(); a.add(0, "zero"); a.add(1, "one"); a.add(2, "two"); a.add(3, "three"); printAl(a); // 此时a的元素是...