stringequals.java

软通公司培训的课件和习题里面有答案。。。

package com.nine.java;

public class StringEquals {

	public static void main(String[] args) {
		
		String s1 = new String("abc");
		String s2 = new String("abc");
		String s3 = "abc";
		String s4 = "abc";
		String s5 = "AbC" ;
		
		
		System.out.println("s1==s2: " + (s1==s2));
		System.out.println("s1.equals(s2): " + (s1.equals(s2)));
		System.out.println("s1==s3: " + (s1==s3));
		System.out.println("s1.equals(s3): " + (s1.equals(s3)));
		System.out.println("s3==s4: " + (s3==s4));
		System.out.println("s3.equalslgnoreCase(s5): " + (s4.equalsIgnoreCase(s5)));
		System.out.println("s2.equalslgnoreCase(s5): " + (s2.equalsIgnoreCase(s5)));
		System.out.println("s2.length(): " + s2.length());
		
	}

}