Java Traps

Start Demo

package com.artoo.java_traps.demos;
/**
 * 
 * @author artoo
 * 
 */
public class IntegerCache {
	public static void main(String[] args) {
		Integer a = 100; // Method java/lang/Integer.valueOf:
		Integer b = 100;
		Integer c = 255;
		Integer d = 255;
		System.out.println(a == b); // true
		System.out.println(c == d); // false
		Long e = 100L;
		Long f = 100L;
		Long g = 255L;
		Long h = 255L;
		System.out.println(e == f); // true
		System.out.println(g == h); // false
	}

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