testequal.java

疯狂Java讲义_源码(含Java设计模式CHM

/**
 * Description:
 * <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */
public class TestEqual
{
	public static void main(String[] args) 
	{
		int it = 65;
		float fl = 65.0f;
		//将输出true
		System.out.println("65和65.0f是否相等？" + (it == fl));
		char ch = 'A';
		//将输出true
		System.out.println("65和'A'是否相等？" + (it == ch));
		String str1 = new String("hello");
		String str2 = new String("hello");
		//将输出false
		System.out.println("str1和str2是否相等？" + (str1 == str2));
		//将输出true
		System.out.println("str1是否equals str2？" + (str1.equals(str2)));

	}
}