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PMP 1600 Questions
PMP 1600 Questions
1600 PMP mock questions 1400 CAPM mock questions 800 SCJP 6 mock questions 600 OCAJP 7 mock questions 590 OCPJP 7 mock questions 556 SCWCD 5 mock questions 500 OCEJWCD 6 mock questions pdfDownload (java,struts, hibernet etc)

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  • SCJP : Inner Classes

    SCJP 1.5/1.6 Exam Kit

    Creating Inner Classes Instances

    Non-static inner classes have a hidden reference to the enclosing class instance. This means you must have an instance of the enclosing class to create the inner class. You also have to use a special "new" function that correctly initializes the hidden reference to the enclosing class. The special "new" function is a member of the enclosing class.

    public class InnerClassTest {	
    	public class ReallyInner {	    
    InnerClassTest o = new InnerClassTest();
    InnerClassTest.ReallyInner i = ReallyInner();
    InnerClassTest.ReallyInner i = new InnerClassTest().new ReallyInner();


    public class InnerClassTest {
    	public void foo() {
    	        System.out.println("Outer class");
    	public class ReallyInner {
    	    public void foo() {
    	        System.out.println("Inner class");
    	    public void test() {
    	public static void main(String[] args) {        
    	        InnerClassTest.ReallyInner i = new InnerClassTest().new ReallyInner();
    Inner class
    Outer class

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