Java中try-catch的使用及注意细节

try{
//可疑代码
//将异常生成对象的异常对象传递给catch块
}catch(异常){
//对异常进行处理
}finally{
} //可以没有finally

public static void main(String[] args) {
    //ctrl + alt +t 
    try {
        String str = "123";
        int a = Integer.parseInt(str);
        System.out.println(a);
    } catch (NumberFormatException e) {
        System.out.println("异常信息" + e.getMessage());
    }finally {
        System.out.println("finally代码块被执行");
    }
    System.out.println("程序继续");
}

public class TryCatchDetai {
    public static void main(String[] args) {

        try {
            Person person = new Person();
            person = null;
            System.out.println(person.getName());
            int n1 = 10;
            int n2 = 0;
            int res = n1/n2;
        }catch (NullPointerException e){
            System.out.println("空指针异常 " + e.getMessage());
        }
        catch (Exception e){
            System.out.println("算术异常" + e.getMessage());
        }finally {

        }
    }
}

class Person{
    private String name = "yayaya";

    public String getName(){
        return name;
    }
}

public class TryCatchDetail02 {
    public static void main(String[] args) {
        try {
            int n1 = 10000;
            int n2 = 0;
            System.out.println(n1/n2);
        }finally {
            System.out.println("执行finally");
        }
        System.out.println("程序继续运行");
    }
}