What operator is colon in java

The colon operator in Java has two uses: 1. Conditional operator: returns different values ​​depending on whether the condition is true or false. 2. Label: Mark a code block or statement, allowing the goto statement to be used to jump to that location.

Colon operator in Java

Colon (:) is an operator in Java, mainly used for The following two purposes:

1. Conditional operator

• is used as part of the ternary operator, also known as the conditional operator.
• Format: (condition)? Value 1 : Value 2
• Returns different values ​​depending on whether the condition is true or false.

2. Tags

• are used to mark code blocks or statements.
• Format: label:
• Allows the use of the goto statement to jump to the marked position.

Example:

Conditional operator

int value1 = 10;
int value2 = 20;
int result = (value1 > value2) ? value1 : value2;
// result 将等于 20

In the above example, if value1 is greater than value2, then result is assigned the value value1, otherwise it is assigned the value value2.

Label

myLabel:
{
    // 代码块
}

In the above example, myLabel is a label. You can use the goto statement to jump to this tag:

goto myLabel;

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