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检查型异常checked
public class AhDataBaseException extends Exception {
public AhDataBaseException(String message, Throwable cause) {
super(message,cause);
}
}public class ConnectionManager {public ResultSet execSelectSQL(String sql) throws AhDataBaseException{ try { conn.setAutoCommit(true); PreparedStatement st = getPreparedStatement(sql); return st.executeQuery(); } catch (SQLException e) { //e.printStackTrace(); throw new AhDataBaseException(sql,e); } }}<% ConnectionManager smgr = new ConnectionManager(); String sql = "select MMSId from a_shipinfoais"; try{ ResultSet rs = smgr.execSelectSQL(sql); int i = 0; while(rs.next()){ i++; out.println(rs.getString("MMSI")); if (i>100) break; } }catch(AhDataBaseException e){ e.printStackTrace(); } %>非检查型异常non-checked:public class AhCheckDataException extends RuntimeException { public AhCheckDataException (String message){ super(message); }}public class Peoples{ private int num = 0; //min = 0 ;max = 100 public setnum(int value){ if ((value<0)||(value>100)){ throw new AhCheckDataException("Out of bound. sun = "+value); } }};public class test{ public static void main(String[] argc){ Peoples pps = new Peoples(); pps.setnum(101); }};标签：
原文地址：http://www.cnblogs.com/melody-emma/p/4975629.html
