Javanote8

Chapter1 Overview: The Mental Landscape

1.1 The Fetch and Execute Cycle: Machine Language

cpu, ram, alu, program counter.

1.2 Asynchronous Events: Polling Loops and Interrupts 轮询和中断

1. Storing: hard disk, solid state drive
2. user input: keyboard, mouse
3. display output: monitor and printer
4. Communication: network interface
5. play sounds: audio output device
6. Convert images into binary number: scanner

1.3 The Java Virtual Machine JVM


Why Java bytecode instead of machine code?

1. complier has to understand java
2. Java bytecode interpreter is small
3. security

1.4 Fundamental Building Blocks of Program 程序的基本构件

data and instructions

Data:

1. variable: memory location
2. Type: what sort of data a variable can hold.

Instruction:

1. Control structre
2. Subroutine

1.5 Objects and Object-oriented Programming

封装继承多态

1.6 The Modern User Interface

1.7 Network and Beyond

Chapter2 Programming in the small 1: Names and Things

2.1 The Basic Java Application

nothing to note

2.2 Vabiables and the Primitive Types

nothing to note

2.3

nothing to note

2.4 Text Input and Text Output

这jb英文教材看的很乏味

此笔记终止