The Java Library in Java

Printer QR Code JIS X 0510 in Java The Java Library

The Java Library
Paint QR Code 2d Barcode In Java
Using Barcode encoder for Java Control to generate, create Denso QR Bar Code image in Java applications.
Scan Quick Response Code In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
Class AccessibleObject Array Constructor Field Method Modifier Proxy ReflectPermission TABLE 27-4
Printing Bar Code In Java
Using Barcode generation for Java Control to generate, create barcode image in Java applications.
Barcode Scanner In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
Primary Function Allows you to bypass the default access control checks Allows you to dynamically create and manipulate arrays Provides information about a constructor Provides information about a field Provides information about a method Provides information about class and member access modifiers Supports dynamic proxy classes Allows reflection of private or protected members of a class
Making QR Code In Visual C#
Using Barcode printer for .NET Control to generate, create QR-Code image in .NET applications.
Generating Denso QR Bar Code In Visual Studio .NET
Using Barcode creation for ASP.NET Control to generate, create QR image in ASP.NET applications.
Classes Defined in javalangreflect
QR Code Encoder In .NET Framework
Using Barcode encoder for VS .NET Control to generate, create QR-Code image in VS .NET applications.
QR Encoder In Visual Basic .NET
Using Barcode creator for .NET Control to generate, create QR Code image in Visual Studio .NET applications.
several methods that can be used to obtain information about an object You will want to explore these on your own However, each supports the toString( ) method Therefore, using Constructor, Field, and Method objects as arguments to the println( ) method is straightforward, as shown in the program
Draw Code 39 In Java
Using Barcode printer for Java Control to generate, create Code39 image in Java applications.
Barcode Generator In Java
Using Barcode generation for Java Control to generate, create bar code image in Java applications.
// Demonstrate reflection import javalangreflect*; public class ReflectionDemo1 { public static void main(String args[]) { try { Class c = ClassforName("javaawtDimension"); Systemoutprintln("Constructors:"); Constructor constructors[] = cgetConstructors(); for(int i = 0; i < constructorslength; i++) { Systemoutprintln(" " + constructors[i]); } Systemoutprintln("Fields:"); Field fields[] = cgetFields(); for(int i = 0; i < fieldslength; i++) { Systemoutprintln(" " + fields[i]); } Systemoutprintln("Methods:"); Method methods[] = cgetMethods(); for(int i = 0; i < methodslength; i++) { Systemoutprintln(" " + methods[i]); } } catch(Exception e) { Systemoutprintln("Exception: " + e); } } }
Generate USS-128 In Java
Using Barcode drawer for Java Control to generate, create UCC-128 image in Java applications.
Printing Code 3 Of 9 In Java
Using Barcode generation for Java Control to generate, create Code 39 Full ASCII image in Java applications.
27:
USPS POSTal Numeric Encoding Technique Barcode Creation In Java
Using Barcode creator for Java Control to generate, create USPS POSTNET Barcode image in Java applications.
Recognizing EAN-13 Supplement 5 In VS .NET
Using Barcode decoder for .NET Control to read, scan read, scan image in .NET framework applications.
NIO, Regular Expressions, and Other Packages
Code 3 Of 9 Drawer In None
Using Barcode encoder for Online Control to generate, create ANSI/AIM Code 39 image in Online applications.
Encoding European Article Number 13 In VB.NET
Using Barcode generator for .NET framework Control to generate, create EAN-13 image in .NET framework applications.
Here is the output from this program (The precise order may differ slightly from that shown) Constructors: public javaawtDimension(int,int) public javaawtDimension() public javaawtDimension(javaawtDimension) Fields: public int javaawtDimensionwidth public int javaawtDimensionheight Methods: public int javaawtDimensionhashCode() public boolean javaawtDimensionequals(javalangObject) public javalangString javaawtDimensiontoString() public javaawtDimension javaawtDimensiongetSize() public void javaawtDimensionsetSize(double,double) public void javaawtDimensionsetSize(javaawtDimension) public void javaawtDimensionsetSize(int,int) public double javaawtDimensiongetHeight() public double javaawtDimensiongetWidth() public javalangObject javaawtgeomDimension2Dclone() public void javaawtgeom Dimension2DsetSize(javaawtgeomDimension2D) public final native javalangClass javalangObjectgetClass() public final native void javalangObjectwait(long) throws javalangInterruptedException public final void javalangObjectwait() throws javalangInterruptedException public final void javalangObjectwait(long,int) throws javalangInterruptedException public final native void javalangObjectnotify() public final native void javalangObjectnotifyAll() The next example uses Java s reflection capabilities to obtain the public methods of a class The program begins by instantiating class A The getClass( ) method is applied to this object reference, and it returns the Class object for class A The getDeclaredMethods( ) method returns an array of Method objects that describe only the methods declared by this class Methods inherited from superclasses such as Object are not included Each element of the methods array is then processed The getModifiers( ) method returns an int containing flags that describe which modifiers apply for this element The Modifier class provides a set of methods, shown in Table 27-5, that can be used to examine this value For example, the static method isPublic( ) returns true if its argument includes the public modifier Otherwise, it returns false In the following program, if the method supports public access, its name is obtained by the getName( ) method and is then printed
Barcode Creator In Visual C#.NET
Using Barcode printer for .NET Control to generate, create bar code image in .NET applications.
Recognizing DataMatrix In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
// Show public methods import javalangreflect*; public class ReflectionDemo2 { public static void main(String args[]) {
UCC.EAN - 128 Drawer In None
Using Barcode printer for Online Control to generate, create GTIN - 128 image in Online applications.
EAN 13 Encoder In Visual Studio .NET
Using Barcode printer for Visual Studio .NET Control to generate, create GTIN - 13 image in .NET framework applications.
Part II:
The Java Library
try { A a = new A(); Class c = agetClass(); Systemoutprintln("Public Methods:"); Method methods[] = cgetDeclaredMethods(); for(int i = 0; i < methodslength; i++) { int modifiers = methods[i]getModifiers(); if(ModifierisPublic(modifiers)) { Systemoutprintln(" " + methods[i]getName()); } } } catch(Exception e) { Systemoutprintln("Exception: " + e); } } } class A { public void a1() { } public void a2() { } protected void a3() { } private void a4() { } }
Here is the output from this program: Public Methods: a1 a2
Method static boolean isAbstract(int val) static boolean isFinal(int val) static boolean isInterface(int val) static boolean isNative(int val) static boolean isPrivate(int val) static boolean isProtected(int val) static boolean isPublic(int val) static boolean isStatic(int val) static boolean isStrict(int val) static boolean isSynchronized(int val) static boolean isTransient(int val) static boolean isVolatile(int val) Description Returns true if val has the abstract flag set and false otherwise Returns true if val has the final flag set and false otherwise Returns true if val has the interface flag set and false otherwise Returns true if val has the native flag set and false otherwise Returns true if val has the private flag set and false otherwise Returns true if val has the protected flag set and false otherwise Returns true if val has the public flag set and false otherwise Returns true if val has the static flag set and false otherwise Returns true if val has the strict flag set and false otherwise Returns true if val has the synchronized flag set and false otherwise Returns true if val has the transient flag set and false otherwise Returns true if val has the volatile flag set and false otherwise
TABLE 27-5
Copyright © OnBarcode.com . All rights reserved.