classdemojava.txt - Author CS307 Course Staff Date Description Demos constructors static vs instance methods and method overloading public class

classdemojava.txt - Author CS307 Course Staff Date...

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/******************************************************************/ /* Author: CS307 Course Staff */ /* Date: February 14, 2005 */ /* Description: Demos constructors, static vs instance methods, */ /* and method overloading. */ /******************************************************************/ public class DemoClass { private int x; public DemoClass() { // assign default value x = 0; } public DemoClass(int x) { // use this.x to refer to the instance variable x // use x to refer to a local variable x (more specifically, // method parameter x) this.x = x; } public DemoClass(DemoClass otherDemo) { // copy the value from the otherDemo this.x = otherDemo.x; } // static method (aka class method) public static void s1() { return; } // instance method public void i1() { return; } // static calling static OK // static calling instance is a compile-time error public static void s2() { // i1(); // compile-time error s1(); // DemoClass.s1 return; } // instance calling static OK // instance calling instance OK public void i2() { s1(); // DemoClass.s1();
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Unformatted text preview: i1(); // this.i1(); return; } // call various versions of overload() based on their // list of parameters (aka function signatures) public void overloadTester() { System.out.println("overloadTester:\n"); overload((byte)1); overload((short)1); overload(1); overload(1L); overload(1.0f); overload(1.0); overload('1'); overload(true); } public void overload(byte b) { System.out.println("byte"); } public void overload(short s) { System.out.println("short"); } public void overload(int i) { System.out.println("int"); } public void overload(long l) { System.out.println("long"); } public void overload(float f) { System.out.println("float"); } public void overload(double d) { System.out.println("double"); } public void overload(char c) { System.out.println("char"); } public void overload(boolean b) { System.out.println("boolean"); } public static void main(String args) { DemoClass dc = new DemoClass(); dc.overloadTester(); } } // end of DemoClass.java...
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