String 引用 与 值 的区别

 

public class Main {
	
	private static String str = "abc";

    public static void main(String[] args) {
        
        String str1 = "a";  
        String str2 = "bc";  
        String str3 = new String("abc");
        String combo = str1 + str2;  
        System.out.println(str == combo);  
        System.out.println(str3 == combo);  
        System.out.println(str == combo.intern());  

        
        
        
    }

}

 分析: