单项选择题
A. Import java.io.*;
B. Include java.io.*;
C. Import java.io.PrintWriter;
D. Include java.io.PrintWriter;
E. No statement is needed.
单项选择题 public class Foo { public void main (String [] args) { system.out.printIn(“Hello World.”); } } What is the result?()
单项选择题 1. public class Test { 2. public static void main (String []args) { 3. unsigned byte b = 0; 4. b--; 5. 6. } 7. } What is the value of b at line 5?()
单项选择题 public class Test { public static void replaceJ(string text) { text.replace (‘j’, ‘l’); } public static void main(String args[]) { string text = new String (“java”) replaceJ(text); system.out.printIn(text); } } What is the result?()