2017.11.27T19_B2_7.3yichang
package com.xdf.demo;
import java.util.InputMismatchException;
import java.util.Scanner;
public class Demo {
/**
* 需求：
* 01.让用户输入两个数字
* 02.求两个数字的商
* 03.使用异常处理机制处理上诉例子可能出现的异常
*/
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
try {
System.out.println("请您输入第一个数字：");
int num1 = input.nextInt();
System.out.println("请您输入第二个数字：");
int num2 = input.nextInt();
System.out.println("num1/num2的值是====》" + (num1 / num2));
} catch (InputMismatchException e) {
System.out.println("出现了 类型不匹配 异常！");
} catch (ArithmeticException e) {
System.out.println("出现了 算术 异常！");
} finally {
System.out.println("程序结束");
}
}****************************************************
package com.xdf.demo;
import java.util.InputMismatchException;
import java.util.Scanner;
public class Demo {
/**
* 需求：
* 01.让用户输入两个数字
* 02.求两个数字的商
* 03.使用异常处理机制处理上诉例子可能出现的异常
*/
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
try {
System.out.println("请您输入第一个数字：");
int num1 = input.nextInt();
System.out.println("请您输入第二个数字：");
int num2 = input.nextInt();
System.out.println("num1/num2的值是====》" + (num1 / num2));
} catch (InputMismatchException e) {
System.out.println("出现了 类型不匹配 异常！");
} catch (ArithmeticException e) {
System.out.println("出现了 算术 异常！");
} finally {
System.out.println("程序结束");
}
}**********************************************************
package com.xdf.demo;
public class ExceptionDemo {
public static void main(String[] args) {
System.out.println(1);
try {
System.out.println(2 / 0);
System.exit(1);
} catch (ArithmeticException e) {
System.out.println("进入了 catch");
} finally {
System.out.println(3);
System.out.println(4);
System.out.println(5);
System.out.println(6);
System.out.println(7);
System.out.println(8);
System.out.println(9);
System.out.println(10);
*******************************************************
package com.xdf.exception;
public class AgeException extends StudentException {
public AgeException() {
super("年龄异常");
************************************
package com.xdf.exception;
public class AgeException extends StudentException {
public AgeException() {
super("年龄异常");
***************************************
package com.xdf.exception;
import java.util.Scanner;
public class StudentDemo {
public static void main(String[] args) throws StudentException {
Scanner input = new Scanner(System.in);
System.out.println("请输入异常（age/name）");
String answer = input.next();
if (answer.equals("age")) {
throw new AgeException();
} else if (answer.equals("name")) {
throw new NameException();
} else {
createStudent();
}
}
private static void createStudent() throws StudentException {
throw new StudentException("学生创建异常");
}
***********************************************************
package com.xdf.exception;
/**
*
* 针对于Student的异常类
*/
public class StudentException extends Exception {
public StudentException(String msg) {
super(msg);
}
public StudentException(String msg, Throwable e) {
super(msg, e);
}
********************************************************
package com.xdf.link;
import java.io.IOException;
import java.sql.SQLException;
import java.util.InputMismatchException;
public class LinkDemo {
// main方法
public static void main(String[] args) {
try {
firstException();
} catch (SQLException e) {
e.printStackTrace();
}
}
// 第1个异常
private static void firstException() throws SQLException {
try {
secondException();
} catch (IOException e) {
e.printStackTrace();
throw new SQLException("第1个异常", e);
}
}
// 第2个异常
private static void secondException() throws IOException {
try {
thirdException();
} catch (InputMismatchException e) {
e.printStackTrace();
throw new IOException("第2个异常", e);
}
}
// 第3个异常
private static void thirdException() throws InputMismatchException {
throw new InputMismatchException("根本的异常");
}
*******************************************************************
package com.xdf.throwdemo;
public class Student {
public static void sleep() throws Exception {
throw new IndexOutOfBoundsException("sleep中的异常信息！"); // 抛出的异常
}
public static void main(String[] args) {
try {
sleep();
} catch (Exception e) {
e.printStackTrace();
}
}
