三角形的三边之和
------------------------------------------------------------------------
class Triangthroeb{
public static void main(String[] agrs) {
Person p = new Person();
try{
p.Person(1,1,3);
}
catch(TriangchaException e){
e.printlnError();
}
catch(TriangException e){
e.printlnError();
}
finally {
System.out.println("程序执行完毕");
}
}
}
class Person{
private int a;
private int b;
private int c;
/* public Person (int a , int b , int c)throws TriangchaException,TriangException{
if (a<0||b<0||c<0 ){
throw new TriangException("参数为负数");
}
else if (a+b < c ||a+c < b ||b+c < a){
throw new TriangchaException();
}
this.int a = a;
this.int b = b;
this.int c = c;
} */
public int Person(int a,int b,int c) throws TriangchaException,TriangException{
if (a<0||b<0||c<0 ){
throw new TriangException("参数为负数");
}
else if (a+b < c ||a+c < b ||b+c < a){
throw new TriangchaException();
}
return a;
}
}
class TriangException extends Exception{
private String info;
public TriangException (String info){
this.info =info;
}
public void printlnError(){
System.out.println(info);
}
}
class TriangchaException extends TriangException{
public TriangchaException (String info){
super(info);
}
public TriangchaException(){
this("两边之和小于第三边");
}
}
------------------------------------------------------------------
判断输入的日期是否正确
（年份，月份，日）
代写 课程在09-01作业即可查看
年 ；；；；
月 1-12
日 1-31 除了2月
public int year，mounth, date
public void setBirthday(int year,int mounth,int date) {
}
