public Class MultiException

Throw a multiexception. If this multi exception is empty then no action is taken. If it contains a single exception that is thrown, otherwise the this multi exception is thrown.

Throw a multiexception. If this multi exception is empty then no action is taken. If it contains a any exceptions then this multi exception is thrown.

Throw a Runtime exception. If this multi exception is empty then no action is taken. If it contains a single error or runtime exception that is thrown, otherwise the this multi exception is thrown, wrapped in a runtime exception.

Exceptions

Error:

If this exception contains exactly 1 Error

RuntimeException:

If this exception contains 1 Throwable but it is not an error, or it contains more than 1 Throwable of any type.

Overrides java.lang.Throwable.printStackTrace.

Doc from java.lang.Throwable.printStackTrace.

Prints this throwable and its backtrace to the standard error stream. This method prints a stack trace for this Throwable object on the error output stream that is the value of the field System.err. The first line of output contains the result of the toString() method for this object. Remaining lines represent data previously recorded by the method fillInStackTrace(). The format of this information depends on the implementation, but the following example may be regarded as typical:

java.lang.NullPointerException
        at MyClass.mash(MyClass.java:9)
        at MyClass.crunch(MyClass.java:6)
        at MyClass.main(MyClass.java:3)

class MyClass {
    public static void main(String[] args) {
        crunch(null);
    }
    static void crunch(int[] a) {
        mash(a);
    }
    static void mash(int[] b) {
        System.out.println(b[0]);
    }
}

HighLevelException: MidLevelException: LowLevelException
        at Junk.a(Junk.java:13)
        at Junk.main(Junk.java:4)
Caused by: MidLevelException: LowLevelException
        at Junk.c(Junk.java:23)
        at Junk.b(Junk.java:17)
        at Junk.a(Junk.java:11)
        ... 1 more
Caused by: LowLevelException
        at Junk.e(Junk.java:30)
        at Junk.d(Junk.java:27)
        at Junk.c(Junk.java:21)
        ... 3 more

public class Junk {
    public static void main(String args[]) {
        try {
            a();
        } catch(HighLevelException e) {
            e.printStackTrace();
        }
    }
    static void a() throws HighLevelException {
        try {
            b();
        } catch(MidLevelException e) {
            throw new HighLevelException(e);
        }
    }
    static void b() throws MidLevelException {
        c();
    }
    static void c() throws MidLevelException {
        try {
            d();
        } catch(LowLevelException e) {
            throw new MidLevelException(e);
        }
    }
    static void d() throws LowLevelException {
       e();
    }
    static void e() throws LowLevelException {
        throw new LowLevelException();
    }
}

class HighLevelException extends Exception {
    HighLevelException(Throwable cause) { super(cause); }
}

class MidLevelException extends Exception {
    MidLevelException(Throwable cause)  { super(cause); }
}

class LowLevelException extends Exception {
}

Exception in thread "main" java.lang.Exception: Something happened
        at Foo.bar(Foo.java:10)
        at Foo.main(Foo.java:5)
        Suppressed: Resource$CloseFailException: Resource ID = 0
                at Resource.close(Resource.java:26)
                at Foo.bar(Foo.java:9)
                ... 1 more

An exception can have both a cause and one or more suppressed exceptions:

Exception in thread "main" java.lang.Exception: Main block
        at Foo3.main(Foo3.java:7)
        Suppressed: Resource$CloseFailException: Resource ID = 2
                at Resource.close(Resource.java:26)
                at Foo3.main(Foo3.java:5)
        Suppressed: Resource$CloseFailException: Resource ID = 1
                at Resource.close(Resource.java:26)
                at Foo3.main(Foo3.java:5)
Caused by: java.lang.Exception: I did it
        at Foo3.main(Foo3.java:8)

Exception in thread "main" java.lang.Exception: Main block
        at Foo4.main(Foo4.java:6)
        Suppressed: Resource2$CloseFailException: Resource ID = 1
                at Resource2.close(Resource2.java:20)
                at Foo4.main(Foo4.java:5)
        Caused by: java.lang.Exception: Rats, you caught me
                at Resource2$CloseFailException.<init>(Resource2.java:45)
                ... 2 more

Overrides java.lang.Throwable.printStackTrace.

Doc from java.lang.Throwable.printStackTrace.

Prints this throwable and its backtrace to the specified print stream.

Parameters

out:PrintStream

PrintStream to use for output

See Also

java.lang.Throwable#printStackTrace(java.io.PrintStream)

Overrides java.lang.Throwable.printStackTrace.

Doc from java.lang.Throwable.printStackTrace.

Prints this throwable and its backtrace to the specified print writer.

Parameters

out:PrintWriter

PrintWriter to use for output

See Also

java.lang.Throwable#printStackTrace(java.io.PrintWriter)

Overrides java.lang.Throwable.toString.

Doc from java.lang.Throwable.toString.

Returns a short description of this throwable. The result is the concatenation of:

• the name of the class of this object
• ": " (a colon and a space)
• the result of invoking this object's getLocalizedMessage method

Returns:String

a string representation of this throwable.