碼解Java：讓初學者讀懂代碼的入門書

目　　錄
第 1 章　小肆的個 Java 程序...........................................................1
1.1 Java 開發(fā)工具 ..................................................................................................... 1
1.1.1　編碼工具 ....................................................................................1
1.1.2 IDE 集成開發(fā)工具 ....................................................................1
1.2　環(huán)境搭建 ............................................................................................................. 2
1.2.1 JVM、JRE、JDK 介紹 .............................................................2
1.2.2 JDK 的下載與安裝 ....................................................................2
1.2.3 IntelliJ IDEA 的安裝與使用 .....................................................5
第 2 章　常量與變量.......................................................................... 11
2.1　常量 ................................................................................................................... 11
2.2　數(shù)據(jù)類型的分類 ............................................................................................... 12
2.2.1　基本數(shù)據(jù)類型 ..........................................................................13
2.2.2　引用數(shù)據(jù)類型 ..........................................................................13
2.3　變量 ................................................................................................................... 14
2.3.1　變量的定義 ..............................................................................14
2.3.2　變量的輸出 ..............................................................................15
2.3.3　使用變量的注意事項 ..............................................................17
X　|　碼解Java：讓初學者讀懂代碼的入門書
2.3.4　數(shù)據(jù)類型轉(zhuǎn)換 ..........................................................................17
2.4　本章思考 ........................................................................................................... 19
第 3 章　運算符 ................................................................................ 21
3.1　運算符的分類 ................................................................................................... 21
3.1.1　算術運算符 ..............................................................................21
3.1.2　邏輯運算符 ..............................................................................22
3.1.3　關系運算符 ..............................................................................23
3.1.4　三元運算符 ..............................................................................24
3.1.5　位運算符（了解） ..................................................................24
3.1.6　賦值運算符 ..............................................................................26
3.1.7　自增 / 自減運算符 ...................................................................27
3.2　思考 ................................................................................................................... 28
3.3　運算符優(yōu)先級 ................................................................................................... 28
第 4 章　流程控制之判斷結構............................................................. 29
4.1　程序運行流程（順序） ................................................................................... 29
4.2　程序運行流程（可控） ................................................................................... 29
4.3 if 判斷 ................................................................................................................ 30
4.3.1 if 的單獨使用 ...........................................................................30
4.3.2 if 與 else 的配合使用 ..............................................................32
4.3.3 else if 的使用 ...........................................................................33
4.4.4 if 的嵌套使用 ...........................................................................38
4.4　思考 ................................................................................................................... 38
4.4.1　判斷奇數(shù) / 偶數(shù) .......................................................................39
4.4.2　判斷平閏年 ..............................................................................39
第 5 章　流程控制之分支 ................................................................... 40
5.1　標準語法 ........................................................................................................... 40
5.2　語法規(guī)則 ........................................................................................................... 41
5.3　案例 ................................................................................................................... 42
目　　錄　　|　XI
5.3.1　成績等級劃分 ..........................................................................42
5.3.2　使用鍵盤進行輸入 ..................................................................43
5.3.3　計算器的基本功能 ..................................................................44
5.3.4　用戶輸入一個年份和月份，輸出其對應的天數(shù) ..................45
5.3.5　愷撒日期 ..................................................................................46
第 6 章　流程控制之循環(huán) ................................................................... 49
6.1　循環(huán)的種類及標準寫法 ................................................................................... 49
6.1.1 while 循環(huán) ................................................................................49
6.1.2 do while 循環(huán) ...........................................................................50
6.1.3 for 循環(huán) ....................................................................................51
6.2 break 和 continue ............................................................................................... 52
6.2.1 break 的用法 ............................................................................52
6.2.2 continue 的用法 .......................................................................54
6.3　案例 ................................................................................................................... 55
6.3.1　輸出 1-10 ..................................................................................55
6.3.2　輸出 1 ～ 100 累加和 ..............................................................55
6.3.3　輸出 1 ～ 100 的偶數(shù)和 ..........................................................56
6.3.4　輸出所有水仙花數(shù) ..................................................................56
6.3.5　輸出 9 行 9 列星號組成的矩形 ..............................................57
6.3.6　輸出 9 行星號組成的直角三角形 ..........................................57
6.3.7　九九乘法表 ..............................................................................58
6.3.8　輸出 7 行 * 號組成的等腰三角形 ..........................................59
6.3.9　輸出 1000 以內(nèi)的素數(shù) ............................................................60
第 7 章　數(shù)組 ................................................................................... 61
7.1　數(shù)組的概念 ....................................................................................................... 61
7.2　數(shù)組的使用 ....................................................................................................... 61
7.2.1　數(shù)組的定義 ..............................................................................61
7.2.2　數(shù)組的初始化 ..........................................................................62
7.2.3　數(shù)組成員的訪問 .....................................................................