人民邮电出版社：高职高专现代信息技术系列教材《JAVA程序设计基础》课程电子教案（PPT课件讲稿）第四章 异常处理和常用系统类

byte bytearrayl=(byte)'n,(byte)e (byte)'w, (byte)',(byte)'y,(byte)'e, (byte)'a,(byte)'r) String Buffer buffer String S, sl, S2, S3, S4, S5, S6, S7, output; s= new String ("hello") 点专此处结束放殃 4合

byte byteArray[] = {(byte) 'n', (byte) 'e', (byte) 'w', (byte) ' ', (byte) 'y', (byte) 'e', (byte) 'a', (byte) 'r' }; StringBuffer buffer; String s, s1, s2, s3, s4, s5, s6, s7, output; s = new String( "hello" );

buffer =new String Buffer( welcome to Java programming! ) sI=new String(; 52=new String(s ) s3=new String( charArray ) s4=new String( charArray, 6, 3); s5=new String( byteArray, 4, 4); s6=new String( byteArray ) s7=new String( buffer ) 点专此处结束放殃 4合

buffer =new StringBuffer( "Welcome to Java Programming!" ); s1 = new String(); s2 = new String( s ); s3 = new String( charArray ); s4 = new String( charArray, 6, 3 ); s5 = new String( byteArray, 4, 4 ); s6 = new String( byteArray ); s7 = new String( buffer );

output=sl=+sl+ns2=+S2 "lns3="+s3+"ns4="+s4+ ns5="+s5+"lns6="+s6+ "lns7="+s7; JOptionPane showMessageDialog(null, output, Demonstrating string class Constructors", 点专此处结束放殃 4合

output = "s1 = " + s1 +"\ns2 = " + s2 + "\ns3 = " + s3 +"\ns4 = " + s4 + "\ns5 = " + s5 +"\ns6 = " + s6 + "\ns7 = " + s7; JOptionPane.showMessageDialog( null, output， "Demonstrating String Class Constructors

JOptionPane INFORMATION MESSAGE ); System. exit(0); 运行结果见图4-5。 点专此处结束放殃 4合

JOptionPane.INFORMATION_MESSAGE ); System.exit( 0 ); } } 运行结果见图4-5

感De_ nstrating string clas,区 31= 图 4 =2= hello 5 多= birth day s4=day 多5三yea =6= new vear s: =He Ico me to Java prog ramming 第定

图 4-5 图-45