java.lang包下的错误及例子

2013-08-23

java.lang包下的异常及例子java.lang包下的Exception如下：Exception－ClassNotFoundException－CloneNotSupp

java.lang包下的异常及例子
java.lang包下的Exception如下：

Exception
    －ClassNotFoundException
    －CloneNotSupportedException
    －IllegalAccessException
    －InstantiationException
    －InterruptedException
    －NoSuchFieldException
    －NoSuchMethodException

RuntimeException extends Exception
    －ArithmeticException
    －IndexOutOfBoundsException
       －ArrayIndexOutOfBoundsException
       －StringIndexOutOfBoundsException
    －ArrayStoreException
    －ClassCastException
    －EnumConstantNotPresentException
    －IllegalArgumentException
       －IllegalThreadStateException
       －NumberFormatException
    －IllegalMonitorStateException
    －IllegalStateException
    －IndexOutOfBoundsException
    －NegativeArraySizeException
    －SecurityException
    －NullPointerException
    －TypeNotPresentException

Exception的描述如下：

以下给出异常产生的实例，红色标记的暂时还没有提供例子。

ArithmeticException

package my.exception;public class ArithmeticExceptionTest {public static void main(String[] args) {int a = 10;a = a/0;}}

ArrayIndexOutOfBoundsException

package my.exception;public class ArrayIndexOutOfBoundsExceptionExample {public static void main(String[] args) {int[] array = {1,2,3};System.out.println(array[3]);}}

ArrayStoreException

package my.exception;import java.util.HashMap;import java.util.Map;public class ArrayStoreExceptionExample {public static void main(String[] args) {        Map<String, Object> map = new HashMap<String, Object>();           map.put("数字", 123);           map.put("字符", "Java");                   Object[] valueArr = map.values().toArray(new String[map.size()]);           for(int i = 0;i<valueArr.length;i++){               System.out.println(valueArr[i]);           }   }}

ClassCastException

package my.exception;public class ClassCastExceptionExample {public static void main(String[] args) {Object x = new Integer(0);     System.out.println((String)x);}}

ClassNotFoundException

package my.exception;

public class ClassNotFoundExceptionExample {

public static void main(String[] args) throws ClassNotFoundException {
Class c = Class.forName("my.exception.ClassNotFoundExceptionExample1");
}
}

CloneNotSupportedException

package my.exception;public class CloneNotSupportedExceptionExample {public static void main(String[] args) throws CloneNotSupportedException {CloneNotSupportedExceptionExample c2 = (CloneNotSupportedExceptionExample) new CloneNotSupportedExceptionExample().clone();}}

IllegalArgumentException

package my.exception;public class IllegalArgumentExceptionExample {public static void main(String[] args) {//Work fineSeason s = Enum.valueOf(Season.class, "SPRING");//Throws IllegalArgumentExceptionSeason s1 = Enum.valueOf(Season.class, "SPRING111");}}enum Season{SPRING,SUMMER,AUTUMN,WINTER;}

IllegalMonitorStateException

package my.exception;public class IllegalMonitorStateExceptionExample {public static void main(String[] args) throws InterruptedException {Thread test = new Thread();test.start();test.wait();test.countStackFrames();}}

IllegalThreadStateException

package my.exception;public class IllegalThreadStateException {public static void main(String[] args) {Thread test = new Thread();//Thread can not be started twice. If we do, then an IllegalThreadStateException occurs.test.start();test.start();}}

InstantiationException

package my.exception;public class InstantiationExceptionExample {static Object createNewInstance(Object obj) {try {return obj.getClass().newInstance();} catch (InstantiationException e) {e.printStackTrace();} catch (IllegalAccessException e) {e.printStackTrace();}return null;}public static void main(String[] args) {String[] s = new String[] { "a", "b", "c" };createNewInstance(s);}}

InterruptedException

package my.exception;public class InterruptedExceptionExample {public static void main(String[] args) throws InterruptedException {final Thread t1 = new Thread() {public void run() {try {Thread.sleep(10000);} catch (InterruptedException e) {e.printStackTrace();}}};Thread t2 = new Thread() {public void run() {try {Thread.sleep(2000);} catch (InterruptedException e) {e.printStackTrace();}t1.interrupt();}};t1.start();t2.start();}}

NegativeArraySizeException

package my.exception;public class NegativeArraySizeExceptionExample {public static void main(String[] args) {int[] array = new int[-1];}}

NoSuchFieldException

package my.exception;import java.lang.reflect.Field;public class NoSuchFieldException {public static void main(String[] args) throws Exception {Field field = NoSuchFieldException.class.getField("name");}}

NoSuchMethodException

public class NoSuchMethodExceptionExample {public static void main(String[] args) {try {NoSuchMethodExceptionExample.class.getMethod("getName", String.class);} catch (SecurityException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (NoSuchMethodException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}

NullPointerException

package my.exception;public class NullPointerExceptionExample {public static void main(String[] args) {String name = null;System.out.println(name.toLowerCase());}}

NumberFormatException

package my.exception;public class NumberFormatExceptionExample {public static void main(String[] args) {int value = Integer.valueOf("123.25f");}}

StringIndexOutOfBoundsException

package my.exception;

public class StringIndexOutOfBoundsExceptionExample {public static void main(String[] args) {String value = "hello world!";char c = value.charAt(20);}}

UnsupportedOperationException

package my.exception;import java.util.Arrays;import java.util.List;public class UnsupportedOperationExceptionExample {public static void main(String[] args) {String[] array = {"Hello","World","Java"};List<String> test = Arrays.asList(array);  //Arrays.asList获取的list是不能用于删除的test.remove("Hello");  }}

对于上述标红的，暂时没有例子的异常，博友们有直接产生的例子也请共享哦。
1 楼 rox 前天谢谢整理！

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java.lang包下的错误及例子