Java determines whether strings are equal

#==Compares references, equals compares values.

1. Comparison of strings in java: ==

We often habitually write Above if(str1==str2), this writing method may cause problems in java.

example1:

String a="abc";String b="abc"

Then a==b will return true. Because the value of a string in Java is immutable, only one copy of the same string will be stored in the memory, so a and b point to the same object;

example2 ：

String a=new String("abc"); String b=new String("abc");

2. The equals method is used to compare whether the contents of the strings are the sameexample：

String a=new String("abc"); 
String b=new String("abc");
 a.equals(b);

Result Return true.

Recommended tutorial:

Getting started with java development

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