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Mobile Java Study/Tip

J2MEกœ ํ”„กœทธž˜ฐ ํ•  •Œ „›€ด  งŒํ•œ ํŒ“ค.


1. ฐ˜ ธ ํ”„กœทธžจ ํ…œํ”Œฆฟ

~cpp 
import javax.microedition.midlet.MIDlet;

public class className extends MIDlet {
	public className() {
	}
	
	public void startApp() {
	}
	
	public void pauseApp() {
	}
	
	public void destroyApp(boolean unconditional) {
	}
}

2. ํŒŒ ž… ฅ

~cpp 
InputStream is = this.getClass().getResourceAsStream("readme.txt");
	try {
		if ( is != null) {
			int ch;
			while ((ch = is.read()) != -1) {
				System.out.print((char) ch);
			}
			is.close();
		}
	}
	catch (IOException e) {
		System.out.println(e);
	}
}

3. ฉ”ชจฆฌ™€ € จํ•˜—ฌ •Œ•„• ํ•  ‚ฌํ•ญ

  • ฉ”ชจฆฌ€ ˜Š” ฒฝšฐ€  ˆŒ€กœ —†ฒŒ ํ•œ‹ค.
  • System.gc() ํ•จˆ˜ ํ˜ธถœํ•˜ฉฐ €„€ ฝœ ‰ํ„ ช…‹œ œกœ ˆ˜ํ–‰ํ•ด €‹ค.
ด ‘ฐœ •ˆํ•˜ฉด ํ•ธ“œํฐด ป—Š” ˆ˜€ žˆ‹คณ  ํ•จ. ป—ฒŒ ํ•˜Š” ํ”„กœทธžจดฉด จธ  „ํ˜€ •ˆํ•ด„ ฌดฐฉํ•˜ฒ ตฐ..;; --ฐฝ„

4. destoryApp ฉ”†Œ“œ˜ unconditional— Œ€ํ•˜—ฌ...

~cpp destoryApp ฉ”†Œ“œ—Š” ~cpp unconditional ดŠ” ~cpp boolean ฐ’ด žˆ‹ค. ~cpp MIDletด ” ดƒ ํ•„š”ํ•˜€ •Š‚˜ ข…ฃŒ˜–ด• ํ•  •Œ ~cpp DestoryApp ฉ”†Œ“œ€ ํ˜ธถœ˜ณ  ~cpp MIDletด ~cpp Destroyed ƒํƒœกœ “ค–ด€ฒŒ ˜Š”ฐ, งŒ•ฝ ~cpp MIDletด ค‘š”ํ•œ  •„ ˆ˜ํ–‰ค‘ดฉด ~cpp MIDletStateChangeException„ ฐœƒ‹œœ ทธ  •ด ‚ •ŒŒ€ ~cpp Destroyed ƒํƒœกœ €Š” ฒƒ„ ง‰„ ˆ˜ žˆ‹ค. ํ•˜€งŒ ดŸฐ š”ฒญ„ ƒํ™ฉ— ”ฐ ฐ›•„“ค—ฌ€€ •Š„ ˆ˜ žˆŠ”ฐ, ~cpp unconditional ดŠ” ฐ’ด ทธ ƒํ™ฉ„ •Œ ค€‹ค. ~cpp unconditionalด ~cpp true ธ ฒฝšฐ—Š”
~cpp MIDletStateChangeException„ ฐœƒํ•ด„ ฌด‹œ˜Š” ƒํ™ฉดณ , ~cpp false ธ ฒฝšฐ—Š” ~cpp MIDletStateChangeException„ ฐœƒํ•˜ฉด ~cpp Destroyed ƒํƒœกœ €Š” ฒƒ„ ž ‹œ ง‰„ ˆ˜ žˆ‹ค.

ทธŸฌ€กœ ~cpp destroyApp ฉ”†Œ“œ งŒ“ค •Œ ~cpp MIDletStateChangeException„ ‚ฌšฉํ•ด• ํ•˜ฒŒ œ‹คฉด ~cpp unconditional ฐ’— ”ฐ ด ฐ’ด ~cpp falseธ ฒฝšฐ—งŒ ~cpp MIDletStatChangeException„ ‚ฌšฉํ•˜ณ  ~cpp trueธ ฒฝšฐŠ” ฌดกฐ~cpp Destroyed ƒํƒœกœ €•ํ•˜Š” ƒํ™ฉด€กœ ทธ ƒํ™ฉ— งžฒŒ ฒ˜ฆฌํ•ด ฉด œ‹ค.

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