How to determine whether strings are equal in java

1. Comparison of strings in java: ==

We often habitually write if( str1==str2), but this way of writing may cause problems in java.

Example:

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

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

Online learning video tutorial sharing: java video tutorial

Example:

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

Then a==b will return false, at this time a and b Point to different objects.

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

Example:

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

The result will return true.

Recommended related articles and tutorials: java quick start

The above is the detailed content of How to determine whether strings are equal in java. For more information, please follow other related articles on the PHP Chinese website!