fardell24

Digital and Interactive Games 2015 – Term 2, Week 4, Session 1
Today
ArrayList
Date and Time (new from Java 8)
Exception Handling

Chapter 9

try {
Intention
}
catch {
if exception is thrown
}
finally {
After the catch of the first block if there is no error
}

ErrorHandlingSample
int numbers = new int(4);

try {
// Force an error
numbers[7] = 34;
}
catch (ArrayIndexOutOfBoundsException except) {
System.out.println(“Index out of range”);
}

…

…

ExceptionCase.java
public class ExceptionCase {

…

Digital and Interactive Games 2015 – Term 2, Week 4, Session 2
Chapter 10

Today: I/0
Byte Stream
– InputStream – Buffer InputStream
– OutputStream

Character Stream

in java.io

{
h ()
}
catch (h) {
}
finally {
.close
}

Classpath

fin = null;

try {
open
}
catch (file not found) {
}

try {
read
}
catch (IOException)

A.txt
Read

Writing
B.txt

IOSample04

– Test 04 and 05

1) in bin folder

2) in data folder

scores.dat
int: player-id
double: scores
double: health
int: check

2 8 0 6 61 0 5 9 : 4
| | | | | | | | :
1) 4 0 12 0 1.8 :
:
2) 4 0 3 0 9 :
| :
36 15 :
36 →: 4

Checksum

[80]
[16]
normal : 888
vertex 1 888
2 888
3 888

> 10 differences → files are
< 10 differences → print where the differences are

YouTube Tutorials : TheNewBoston (C++, web, etc)

Next Week
Wed: Java
Thurs: C++ Dungeon Game

IOSample06


// Read and Write Binary Data

int i = 34;
double d = 3.4505;
try (DataOutputStream fout = new DataOutputStream(new FileOutputStream(“myData”))) {
	fout.writeInt();
	fout.writeDouble();
}
catch(IOException except) {
	System.out.println(“Error when reading data”);
}

// Read the data back
try (DataInputStream fout = new DataInputStream(new FileInputStream(“myData”))) {
	i = fin.readInt();
	d = fin.readDouble();
	System.out.println(“i = ” + i);
	System.out.println(“d = ” + d);
}
catch (IOException except) {
	System.out.println(“Error when reading data”);
}