JAVA里常见的异常类型有哪些呢？

我们用代码进行异常类型的举例说明：

//以下是运行时异常*********

//ArithmeticException

@Test

public void test6(){

int a = 10;

int b = 0;

System.out.println(a / b);

}

//InputMismatchException

@Test

public void test5(){

Scanner scanner = new Scanner(System.in);

int score = scanner.nextInt();

System.out.println(score);

scanner.close();

}

//NumberFormatException

@Test

public void test4(){

String str = "123";

str = "abc";

int num = Integer.parseInt(str);

}

//ClassCastException

@Test

public void test3(){

Object obj = new Date();

String str = (String)obj;

}

//IndexOutOfBoundsException

@Test

public void test2(){

//ArrayIndexOutOfBoundsException

// int[] arr = new int[10];

// System.out.println(arr[10]);

//StringIndexOutOfBoundsException

String str = "abc";

System.out.println(str.charAt(3));

}

//NullPointerException

@Test

public void test1(){

// int[] arr = null;

// System.out.println(arr[3]);

String str = "abc";

str = null;

System.out.println(str.charAt(0));

}

//以下是编译时异常*********

@Test

public void test7(){

// File file = new File("hello.txt");

// FileInputStream fis = new FileInputStream(file);

//

// int data = fis.read();

// while(data != -1){

// System.out.print((char)data);

// data = fis.read();

// }

//

// fis.close();

}

上述代码就是Java中较常见的异常类型，我们可以根据其进行应用。