package ch3;

import java.math.BigDecimal;

/**
 * 2、数据类型问题，Java基本数据类型4类8种，参考第三章PPT
 */
public class TestVar2 {
	public static void main(String[] args) {
		boolean b = true;
		int x, y = 9;
		
		float f = 1.12345678f;
		float f2 = 1.12345679f;
		System.out.println(f);
		System.out.println(f == f2);
		
		char c1, c2;
		c1 = '\u534e';
		c2 = 'c';
		x = 12;
		System.out.println("b=" + b);
		System.out.println("x=" + x + ",y=" + y);
		System.out.println("f=" + f);
		System.out.println("c1=" + c1);
		System.out.println("c2=" + c2);
		
		BigDecimal big1 = BigDecimal.valueOf(1.12345678);
		BigDecimal big2 = BigDecimal.valueOf(1.12345679);
		System.out.println(big1.equals(big2));Integer n1 = new Integer(47);
		Integer n2 = new Integer(47);
		System.out.println(n1 == n2);
		
	}
}