Java String int Integer （三种数据类型之间的转换）

public class Test {
    
    
    public static void main(String[] args) {
    
    
        int i =100;
        String s = String.valueOf(i);//int to String
        Integer integer = Integer.valueOf(i);//int to Integer
        int i1 = Integer.parseInt(s);//String to int
        Integer integer1 = Integer.valueOf(s);//String to Integer
        String s1 = String.valueOf(integer);// Integer to String
        int i2 = integer.intValue();//Integer to int
    }
}