121 lines
3.7 KiB
Java
121 lines
3.7 KiB
Java
// housekeeping/PrimitiveOverloading.java
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// (c)2017 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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// Promotion of primitives and overloading
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public class PrimitiveOverloading {
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void f1(char x) { System.out.print("f1(char) "); }
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void f1(byte x) { System.out.print("f1(byte) "); }
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void f1(short x) { System.out.print("f1(short) "); }
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void f1(int x) { System.out.print("f1(int) "); }
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void f1(long x) { System.out.print("f1(long) "); }
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void f1(float x) { System.out.print("f1(float) "); }
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void f1(double x) { System.out.print("f1(double) "); }
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void f2(byte x) { System.out.print("f2(byte) "); }
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void f2(short x) { System.out.print("f2(short) "); }
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void f2(int x) { System.out.print("f2(int) "); }
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void f2(long x) { System.out.print("f2(long) "); }
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void f2(float x) { System.out.print("f2(float) "); }
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void f2(double x) { System.out.print("f2(double) "); }
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void f3(short x) { System.out.print("f3(short) "); }
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void f3(int x) { System.out.print("f3(int) "); }
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void f3(long x) { System.out.print("f3(long) "); }
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void f3(float x) { System.out.print("f3(float) "); }
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void f3(double x) { System.out.print("f3(double) "); }
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void f4(int x) { System.out.print("f4(int) "); }
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void f4(long x) { System.out.print("f4(long) "); }
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void f4(float x) { System.out.print("f4(float) "); }
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void f4(double x) { System.out.print("f4(double) "); }
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void f5(long x) { System.out.print("f5(long) "); }
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void f5(float x) { System.out.print("f5(float) "); }
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void f5(double x) { System.out.print("f5(double) "); }
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void f6(float x) { System.out.print("f6(float) "); }
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void f6(double x) { System.out.print("f6(double) "); }
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void f7(double x) { System.out.print("f7(double) "); }
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void testConstVal() {
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System.out.print("5: ");
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f1(5);f2(5);f3(5);f4(5);f5(5);f6(5);f7(5);
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System.out.println();
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}
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void testChar() {
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char x = 'x';
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System.out.print("char: ");
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f1(x);f2(x);f3(x);f4(x);f5(x);f6(x);f7(x);
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System.out.println();
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}
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void testByte() {
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byte x = 0;
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System.out.print("byte: ");
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f1(x);f2(x);f3(x);f4(x);f5(x);f6(x);f7(x);
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System.out.println();
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}
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void testShort() {
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short x = 0;
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System.out.print("short: ");
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f1(x);f2(x);f3(x);f4(x);f5(x);f6(x);f7(x);
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System.out.println();
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}
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void testInt() {
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int x = 0;
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System.out.print("int: ");
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f1(x);f2(x);f3(x);f4(x);f5(x);f6(x);f7(x);
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System.out.println();
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}
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void testLong() {
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long x = 0;
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System.out.print("long: ");
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f1(x);f2(x);f3(x);f4(x);f5(x);f6(x);f7(x);
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System.out.println();
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}
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void testFloat() {
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float x = 0;
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System.out.print("float: ");
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f1(x);f2(x);f3(x);f4(x);f5(x);f6(x);f7(x);
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System.out.println();
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}
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void testDouble() {
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double x = 0;
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System.out.print("double: ");
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f1(x);f2(x);f3(x);f4(x);f5(x);f6(x);f7(x);
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System.out.println();
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}
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public static void main(String[] args) {
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PrimitiveOverloading p =
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new PrimitiveOverloading();
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p.testConstVal();
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p.testChar();
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p.testByte();
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p.testShort();
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p.testInt();
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p.testLong();
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p.testFloat();
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p.testDouble();
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}
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}
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/* Output:
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5: f1(int) f2(int) f3(int) f4(int) f5(long) f6(float)
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f7(double)
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char: f1(char) f2(int) f3(int) f4(int) f5(long) f6(float)
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f7(double)
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byte: f1(byte) f2(byte) f3(short) f4(int) f5(long)
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f6(float) f7(double)
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short: f1(short) f2(short) f3(short) f4(int) f5(long)
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f6(float) f7(double)
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int: f1(int) f2(int) f3(int) f4(int) f5(long) f6(float)
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f7(double)
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long: f1(long) f2(long) f3(long) f4(long) f5(long)
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f6(float) f7(double)
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float: f1(float) f2(float) f3(float) f4(float) f5(float)
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f6(float) f7(double)
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double: f1(double) f2(double) f3(double) f4(double)
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f5(double) f6(double) f7(double)
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*/
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