Answers for "java.string"

String... java

//Object... (here String...) means that you can give
//in parameter one or many objects of same type

func();

func("arg1", "arg2", "arg3");

String[] args = new String[]{"arg1", "arg2", "arg3"}
func(args);

void func(String... args);

strings in java

StringBuilder str = new StringBuilder();
str.append("GFG");

java String method

String txt = "Hello World";
System.out.println(txt.toUpperCase());   // Outputs "HELLO WORLD"
System.out.println(txt.toLowerCase());   // Outputs "hello world"