[Java] Java异常处理与throws关键字用法分析

exc e=null;
system.out.println(e.i);

int a=10;
int b=0;
system.out.println(a/b);

try{
异常语句；
}
catch(exception e){
}
finally{
   一定会执行的代码；
}

int a=10;
int b=0;
try {
   system.out.println(a/b);
}
catch (arithmeticexception e){
   system.out.println(e);
}

int temp=0;
exc e=null;
try {
  temp=e.a/e.b;
  system.out.println(temp);
}
catch (nullpointerexception e1){
  system.out.println("空指针异常"+e1);
}
catch (arithmeticexception e1){
  system.out.println("算数异常"+e1);
}
finally {
  system.out.println("程序退出");
}

public void tell()throws exception{}

public static void main(string [] args){
  try {
    tell(10,0);
  }
  catch (exception e){
    system.out.println(e);
  }
}
public static void tell(int i,int j)throws arithmeticexception{
  int temp=0;
  temp=i/j;
  system.out.println(temp);
}

public static void main(string [] args)throws exception{
  tell(10,0);
}
public static void tell(int i,int j)throws arithmeticexception{
  int temp=0;
  temp=i/j;
  system.out.println(temp);
}