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public String substring(int beginIndex)

or

public String substring(int beginIndex, int endIndex)

public class tutorialproTest {
    public static void main(String args[]) {
        String Str = new String("This is text");

        System.out.print("Return value :" );
        System.out.println(Str.substring(4) );

        System.out.print("Return value :" );
        System.out.println(Str.substring(4, 10) );
    }
}

Return value : is text
Return value : is te