What does java if(x) mean?

java what does if(x) mean

This is the if conditional judgment statement in java, after if Inside the brackets is an expression, which is executed when the expression is true and not executed when the expression is false.

java if(x) means that when the value of variable x is not empty, not 0, not false, or not null, the following content will be executed.

if statement: used for judgment, can be single branch or multiple branches

Single branch:

if(判断语句){
    //满足,则执行的代码块
}else{
    //不满足判断语句时,执行的代码块
}

multiple Branch:

if(判断语句1){
//满足判断语句1,执行的代码块
}else if(判断语句2){
//不满足判断语句1,满足判断语句2,执行代码块
}else{
//既不满足语句1,也不满足语句2,执行的代码块
}

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