JAVA_ Test134_ StringBuffer 클래스 / .replace() / .delete() / .substring() / .insert()

Test134  StringBuffer 클래스 / .replace() / .delete() / .substring() / .insert()

Test134.java

public class Test134

{

public static void main(String[] args)

{

String s1 = "123456789";

s1 = (s1 + "123").replace('2', 'A');

// 123456789

// 123456789123

// 1A34567891A3

System.out.println(s1);

//--==>> 1A34567891A3

StringBuffer s2 = new StringBuffer("123456789");

s2.delete(0,3).replace(1, 3, "24").delete(4, 6);

// 123456789

// 456789

// 424789

// 4247

System.out.println(s2);

//--==>> 4247

StringBuffer s3 = new StringBuffer("123456789");

String s4 = s3.substring(3, 6);

// 123456789

// 456

System.out.println(s4);

//--==>> 456

StringBuffer s5 = new StringBuffer("123456789");

s5.delete(0,3).delete(1,3).delete(2,5).insert(1,"24");

// 123456789

// 456789

// 4789

// 47

// 4247

System.out.println(s5);

}

}

cmd

1A34567891A3

4247

456

4247

계속하려면 아무 키나 누르십시오 . . .