Public Class Extends Person Public Tony Public String Str Super Str Systemprintln Public S Q43808280
资江工业大学考试命题班 public class who extends Person { public who() { this(“I am Tony”); public who(String str) { super(str); System.out.println(“How do you do?”); public static void main(String[] args) { who new who(“Tom”); public class Object Compare { public static void main(String[] args) { String oc = “hello”; Object ol = new String(oc); Object 02 – (Object) oc; if (01 = 0){ System.out.println(“01-Oc”); if (02 – oc) { System.out.println(“02–oc”); 1f (01.equals(oc)) { System.out.println(“o1.equals(oc)–true”); if (02.equals(oc)) { System.out.println(“o2.equals(oc)–true”); 5) class TestString? public void stringReplace (String text) { text – text.replace(‘j’ , ‘i’); text=text+”C”; public void bufferReplace (StringBuffer text) { text.setCharAt(0, ‘1’); text = text.append(“C”); public void change(char ch[]) { Show transcribed image text 资江工业大学考试命题班 public class who extends Person { public who() { this(“I am Tony”); public who(String str) { super(str); System.out.println(“How do you do?”); public static void main(String[] args) { who new who(“Tom”); public class Object Compare { public static void main(String[] args) { String oc = “hello”; Object ol = new String(oc); Object 02 – (Object) oc; if (01 = 0){ System.out.println(“01-Oc”); if (02 – oc) { System.out.println(“02–oc”); 1f (01.equals(oc)) { System.out.println(“o1.equals(oc)–true”); if (02.equals(oc)) { System.out.println(“o2.equals(oc)–true”); 5) class TestString? public void stringReplace (String text) { text – text.replace(‘j’ , ‘i’); text=text+”C”; public void bufferReplace (StringBuffer text) { text.setCharAt(0, ‘1’); text = text.append(“C”); public void change(char ch[]) {
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