String、Integer、int三者相互转换

package Com.czie.iot1913.practice.Common.pra.IntegerTest;

/**
 * @author 1944900433@qq.com
 * @date 2022-03-10 18:22
 */
public class IntegerTest07 {
    public static void main(String[] args) {
        //String -->int
        String s1="123";
        int i1=Integer.parseInt(s1);
        System.out.println(i1);
        //int-->String
        int i2=1944;
        String s002=i2+"";
        String s2=String.valueOf(i2);
        System.out.println();
        System.out.println(s2+1);
        //int -->Integer
        Integer i3=3;
        System.out.println(i3);
        //Integer-->int
        Integer integer01 = new Integer(10);
        int i4=integer01;
        System.out.println(i4);
        //String-->Integer
        String s3="170";
        Integer integer02=Integer.parseInt(s3);
        System.out.println(integer02);
        Integer i0001=Integer.valueOf(s3);
        //Integer-->String
        Integer i01=20;
        String s01=i01.toString();
        System.out.println(s01);

        String s02=String.valueOf(i01);





    }
}