What does == symbol mean in java

"==" in Java is a relational operator, which checks whether the values ​​of the two operands are equal. If they are equal, the condition is true. (Recommended: java video tutorial)

1. For basic data types, == indicates whether the values ​​are equal,

For example:

int x = 3;
if(x==3){//true
//do something  
}

2. For object data types, == indicates whether the address values ​​​​are equal.

For example:

String str1 = new String("str1");
String str2 = new String("str2");
if(str1 ==str2){//false
//do something
}

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