<span style="font-family:Microsoft YaHei;font-size:14px;"><span lang="EN-US">Throwable</span> <span lang="EN-US">java.lang</span> 。 ， <span lang="EN-US">Error </span> <span lang="EN-US">Exception</span>， 。</span><span style="font-family:Microsoft YaHei;font-size:14px;">
</span>
<span style="font-family:Microsoft YaHei;font-size:12px;"><span lang="EN-US">Error</span> ， ， 。<span lang="EN-US">
Exception</span> <span lang="EN-US">Throwable</span> 。 <span style="white-space:pre"> </span></span><span style="font-family:Microsoft YaHei;font-size:12px;"><span lang="EN-US">Exception</span> ， <span lang="EN-US">Java</span> ， 。<span> </span><span lang="EN-US">Exception </span> <span lang="EN-US">Java</span> （ <span lang="EN-US">Exception</span> ）， 。 <span style="white-space:pre"> </span> 、 。</span><span lang="EN-US" style="font-family: Arial, Helvetica, sans-serif;"><span style="font-family:Microsoft YaHei;font-size:12px;"> </span></span>
<span lang="EN-US"><span style="font-family:Microsoft YaHei;"><span style="font-size:12px;">
</span></span><span style="font-family:Microsoft YaHei;font-size:12px;"> </span></span><span style="font-family:Microsoft YaHei;font-size:12px;"> ：<span lang="EN-US">
ArithmeticException——</span> 0 ；<span lang="EN-US">
ArrayStoreException——</span> ；<span lang="EN-US">
ClassCastException—</span> ， ， ， ；<span lang="EN-US">
IllegalMonitorStateException——</span> ；<span lang="EN-US">
NegativeArraySizeException—</span> ， ；<span lang="EN-US">
NullPointerException—</span> ；<span lang="EN-US">
OutofMemoryException——</span> <span lang="EN-US">new</span> ， ；<span lang="EN-US">
SecurityException——</span> ， ；<span lang="EN-US">
IndexOutOfBoundsExcention——</span> ；<span lang="EN-US">
IOException——</span> 、 <span lang="EN-US">I/O</span> ；<span lang="EN-US">
ClassNotFoundException——</span> ；<span lang="EN-US">
CloneNotSupportedException——</span> <span lang="EN-US">Object</span> <span lang="EN-US">clone</span> ， <span lang="EN-US">Cloneable</span> ， ；<span lang="EN-US">
InterruptedException—</span> ， ， ， ， ；<span lang="EN-US">
NoSuchMethodException</span> ， ；<span lang="EN-US">
Illega1AccessExcePtion—</span> <span lang="EN-US">public</span> ；<span lang="EN-US">
StringIndexOutOfBoundsException——</span> ， ；<span lang="EN-US">
ArrayIdexOutOfBoundsException—</span> ， ；<span lang="EN-US">
NumberFormatException——</span> <span lang="EN-US">UTF</span> ；<span lang="EN-US">
IllegalThreadException—</span> ， ；<span lang="EN-US">
FileNotFoundException——</span> ；<span lang="EN-US">
EOFException——</span> 。</span><span style="font-family:Microsoft YaHei;font-size:14px;">
</span>
<span style="font-family:Microsoft YaHei;font-size:14px;"> ：</span>
<span style="font-family:Microsoft YaHei;font-size:14px;"> package java.lang;
import java.io.*;
/**
*
* Throwable Error Exceptiong
* :
* Throwable()
* Throwable(String message)
* Throwable(Throwable cause)
* Throwable(String message, Throwable cause)
*
*/
public class Throwable implements Serializable {
private static final long serialVersionUID = -3042686055658047285L;
/**
* Native code saves some indication of the stack backtrace in this slot.
*/
private transient Object backtrace;
/**
*
*/
private String detailMessage;
/**
* Throwable
* null Throwable
* ,
*/
private Throwable cause = this;
/**
*
*/
private StackTraceElement[] stackTrace;
/**
* , initCause
* fillInStackTrace
*/
public Throwable() {
fillInStackTrace();
}
/**
*
*/
public Throwable(String message) {
//
fillInStackTrace();
//
detailMessage = message;
}
/**
* ,cause
*/
public Throwable(String message, Throwable cause) {
fillInStackTrace();
detailMessage = message;
this.cause = cause;
}
/**
*
*/
public Throwable(Throwable cause) {
fillInStackTrace();
detailMessage = (cause==null ? null : cause.toString());
this.cause = cause;
}
/**
*
*/
public String getMessage() {
return detailMessage;
}
/**
*
*/
public String getLocalizedMessage() {
return getMessage();
}
/**
*
*/
public Throwable getCause() {
return (cause==this ? null : cause);
}
/**
* ,
*/
public synchronized Throwable initCause(Throwable cause) {
//
if (this.cause != this)
throw new IllegalStateException("Can't overwrite cause");
//
if (cause == this)
throw new IllegalArgumentException("Self-causation not permitted");
//
this.cause = cause;
//
return this;
}
/**
*
*/
public String toString() {
String s = getClass().getName();
String message = getLocalizedMessage();
return (message != null) ? (s + ": " + message) : s;
}
/**
*
*/
public void printStackTrace() {
printStackTrace(System.err);
}
/**
*
*/
public void printStackTrace(PrintStream s) {
synchronized (s) {
// toString
s.println(this);
//
StackTraceElement[] trace = getOurStackTrace();
//
for (int i=0; i < trace.length; i++)
s.println("\tat " + trace[i]);
//
Throwable ourCause = getCause();
//
if (ourCause != null)
ourCause.printStackTraceAsCause(s, trace);
}
}
/**
*
* @param s
* @param causedTrace
*/
private void printStackTraceAsCause(PrintStream s,
StackTraceElement[] causedTrace)
{
//
StackTraceElement[] trace = getOurStackTrace();
//m ,
//n
int m = trace.length-1, n = causedTrace.length-1;
// , ,
while (m >= 0 && n >=0 && trace[m].equals(causedTrace[n])) {
m--; n--;
}
//
int framesInCommon = trace.length - 1 - m;
//
s.println("Caused by: " + this);
for (int i=0; i <= m; i++)
s.println("\tat " + trace[i]);
//
if (framesInCommon != 0)
s.println("\t... " + framesInCommon + " more");
// ,
Throwable ourCause = getCause();
if (ourCause != null)
ourCause.printStackTraceAsCause(s, trace);
}
/**
*
*/
public void printStackTrace(PrintWriter s) {
synchronized (s) {
s.println(this);
StackTraceElement[] trace = getOurStackTrace();
for (int i=0; i < trace.length; i++)
s.println("\tat " + trace[i]);
Throwable ourCause = getCause();
if (ourCause != null)
ourCause.printStackTraceAsCause(s, trace);
}
}
/**
*
*/
private void printStackTraceAsCause(PrintWriter s,
StackTraceElement[] causedTrace)
{
// assert Thread.holdsLock(s);
// Compute number of frames in common between this and caused
StackTraceElement[] trace = getOurStackTrace();
int m = trace.length-1, n = causedTrace.length-1;
while (m >= 0 && n >=0 && trace[m].equals(causedTrace[n])) {
m--; n--;
}
int framesInCommon = trace.length - 1 - m;
s.println("Caused by: " + this);
for (int i=0; i <= m; i++)
s.println("\tat " + trace[i]);
if (framesInCommon != 0)
s.println("\t... " + framesInCommon + " more");
// Recurse if we have a cause
Throwable ourCause = getCause();
if (ourCause != null)
ourCause.printStackTraceAsCause(s, trace);
}
/**
*
*/
public synchronized native Throwable fillInStackTrace();
/**
*
*/
public StackTraceElement[] getStackTrace() {
return (StackTraceElement[]) getOurStackTrace().clone();
}
/**
*
*/
private synchronized StackTraceElement[] getOurStackTrace() {
//
if (stackTrace == null) {
//
int depth = getStackTraceDepth();
// ,
stackTrace = new StackTraceElement[depth];
for (int i=0; i < depth; i++)
stackTrace[i] = getStackTraceElement(i);//
}
return stackTrace;
}
/**
*
*/
public void setStackTrace(StackTraceElement[] stackTrace) {
//
StackTraceElement[] defensiveCopy =
(StackTraceElement[]) stackTrace.clone();
//
for (int i = 0; i < defensiveCopy.length; i++)
if (defensiveCopy[i] == null)
throw new NullPointerException("stackTrace[" + i + "]");
//
this.stackTrace = defensiveCopy;
}
/**
* ,0
*/
private native int getStackTraceDepth();
/**
*
*/
private native StackTraceElement getStackTraceElement(int index);
private synchronized void writeObject(java.io.ObjectOutputStream s)
throws IOException
{
getOurStackTrace();
s.defaultWriteObject();
}
}
</span>