AndersonChoi

class ChildBook implements Book{
  private final int code=1;
  private final int point=1000;
  
  @Override
  public int priceCode(){
    return this.code;
  }
  @Override
  public int getPointPercent(){

AndersonChoi

public interface Book{
  int priceCode();
  int getPointPercent();
}

AndersonChoi

//catch 블록을 비우면 예외는 무시된다.-이상한코드...
try{
  ....
} catch (someException e){
}

AndersonChoi

public Object pop(){
  if(size==0)
    throw new EmptyStackException();
  Object result = element[--size];
  ...
  //기타코드  
  return result;
}

AndersonChoi

public IndexOutOfBoundsException(int lowerBound, int upperBound, int index){
  //파라미터로 부터 오류를 알 수 있는 상세한 메시지 작성
  super("Lower bound: "+lowerBound +
        ", Upper bound: "+upperBound +
        ", Index: "+index);
  
  //프로그램에서 이용할 수 있도록 오류 정보보관  
  this.lowerBound = lowerBound;
  this.upperBound = upperBound;
  this.index = index;

AndersonChoi

if(obj.fileIOPermitted(args)){
  obj.fileIO(args);
}else{
  //예외사항 처리...
  ...
}

AndersonChoi

try{
  obj.fileIO(args);
}catch(FileInputOutputException e){
  //예외사항 처리...
  ...
}

AndersonChoi

import java.util.Calendar;

public class TestExceptionPerformance {

	public static void main(String[] args) {

		int count[] = new int[100000];
		long startTime = System.currentTimeMillis();

		for (int i = 0; i < count.length; i++) { count[i]++; }

AndersonChoi

import java.util.Calendar;

public class TestExceptionPerformance {

	public static void main(String[] args) {

		int count[] = new int[100000];
		long startTime = System.currentTimeMillis();

		try {

AndersonChoi

try{
  int i = 0;
  while(true)
    personArray[i++].addCount();
}catch(ArrayIndexOutOfBoundsException e){
}