Java系列：《Java核心技术 卷一》学习笔记，cchapter11 异常

try{
    ....
}catch(FileNotFoundException | UnknownHostException){
    ...
}

try{
    ...
}catch(Exception e){
    Throwable se = new ServetException("database error: ");
    se.initCause(e);
    throw se;
}

    try(Resources res = ){
        work with this res
    }

FileInputStream fs=null;
try{
    fs = new FileInputStream("D:\test.txt");
    fs.xxxxx
}
finally{   
    if(fs != null) fs.close();
 }

    Throwable t = new Throwable();
    StackTraceElement[] frames = t.getStackTrace();
    for(StackTraceElement frame : frames){
        //xxxxx
    }

Map<Thread, StackTraceElement[]> map = Thread.getAllStackTrace();
for(Thread t: map.keys()){
    StackTraceElement frames = map.get(t);
    analyze frame
}

String getFileName();
int getLineNumber();
String getClassName();
String getMethodName();
boolean isNativeMethod();
String toString();

public void readStuff(Sting fileName) throw s IOException{
    InputStream is = new FileInputStream(fileName);
    //xxxx
}