What does != mean in java?

The != operator in Java is used to compare the equality of two operands. It returns true to indicate inequality and false to indicate equality. It is suitable for various data types, such as boolean, char, byte, short , int, long, float and double.

The != operator in Java

What is the role of the != operator?

The != operator in Java is a comparison operator used to compare the equality of two operands. It returns true if the two operands are not equal, and returns false if the two operands are equal.

!= The syntax of the operator

!= The syntax of the operator is as follows:

<code>boolean != (boolean a, boolean b)
boolean != (char a, char b)
boolean != (byte a, byte b)
boolean != (short a, short b)
boolean != (int a, int b)
boolean != (long a, long b)
boolean != (float a, float b)
boolean != (double a, double b)</code>

Among them, a and b are the data to be compared.

!= Application of operator

!= operator is widely used in Java programs to determine whether two values ​​are not equal. For example:

<code class="java">boolean result = (a != b);
if (result) {
    // a 和 b 不相等
} else {
    // a 和 b 相等
}</code>

Note

It is important to note that the != operator is the opposite of the == operator. The == operator is used to compare for equality, while the != operator is used to compare for inequality.

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