Demo01

/**

• Demo01

• 描述:

*/
public class Demo01 {
public static void main(String[] args) {
//整数拓展： 进制 二进制0b 十进制0 八进制0x
int i = 10;
int i2 = 010;
int i3 = 0x10;
System.out.println(i);

    System.out.println(i2);

    System.out.println(i3);


    //浮点数拓展
    float f = 0.1f;
    double d = 1.0/10;
    System.out.println(f==d);

    float t1 = 344224;
    float t2 = t1+1;
    System.out.println(t1==t2);

    char a1 = 'f';
    char a2 = '年';
    System.out.println(a1);
    System.out.println(a2);
    System.out.println((int)a1);
    System.out.println((int)a2);

    char a3 = '\u0061';
    System.out.println(a3);

    //转义字符
    System.out.println("hello\tworld");
    System.out.println("hello\nworld");

    String s1 = new String("hello world");
    String s2 = new String("hello world");
    System.out.println(s1==s2);


    String s3 = "hello world";
    String s4 = "hello world";
    System.out.println(s3==s4);

}

}

标签：String,int,System,Demo01,println,hello,out
来源： https://www.cnblogs.com/jcjava365/p/15989091.html