//Program for White Space import java.io.*; class WhiteSpace { public static void main(String soham[]) throws Exception { String str; BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); System.out.print("\nEnter String: "); str = br.readLine(); System.out.print("\nIn this statement, back space is used: "+str+"\b "); System.out.print("\nIn this statement, form feed is used: \f "+str+" \f "); System.out.print("\nIn this statement, new line is used: \n"+str); System.out.print("\nIn this statement, horizontal tab is used: \t"+str); System.out.print("\nIn this statement, single quote is used: \'"+str+"\'"); System.out.print("\nIn this statement, double quote is used: \""+str+"\""); System.out.print("\nIn this statement, backslash is used: \\"+str); System.out.println(); } }
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//Program for size of the Datatypes and their Default values class Datatypes { static int sizeof(byte b) { return 1; } static int sizeof(short s) { return 2; } static int sizeof(int i) { return 4; } static int sizeof(long l) { return 8; } static int sizeof(float f) { return 4; } static int sizeof(double d) { return 8; } public static void main(String soham[]) throws Exception { byte b = 0; short s = 0; int i = 0; long l = 0; float f = 0.0f; double d = 0.0d; System.out.println("\nDatatypes"+" Size"+"\tDefault values"); System.out.println("byte:\t "+sizeof(b)+" \t0"); System.out.println("short:\t "+sizeof(s)+" \t0"); System.out.println("int:\t "+sizeof(i)+" \t0"); System.out.println("long:\t "+sizeof(l)+" \t0L"); System.out.println("float:\t "+sizeof(f)+" \t0.0f"); System.out.println("double:\t "+sizeof(d)+" \t0.0d"); System.out.println(); } }
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//Program for Print() And Println() method class Print_Demo { public static void main(String soham[]) throws Exception { System.out.println("\nWelcome To"); System.out.print("Java Programming"); System.out.println(); } }
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//Program for Array Of Object import java.io.*; class Employee { String name; int emp_id; int salary; BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); public void get_data() { try { System.out.print("\nEnter name: "); name = br.readLine(); System.out.print("\nEnter emp id: "); emp_id = Integer.parseInt(br.readLine()); System.out.print("\nEnter salary: "); salary = Integer.parseInt(br.readLine()); } catch(Exception e) { System.out.print("\n"+e); } } public void display() { System.out.print("\nName: "+name); System.out.print("\nEmp id: "+emp_id); System.out.print("\nSalary: "+salary); System.out.println(); } } public class Array_of_object { public static void main(String s[]) throws Exception { int i; Employee emp[] = new Employee[3]; for(i=0;i<=2;i++) { emp[i] = new Employee(); } for(i=0;i<=2;i++) { System.out.print("\nEnter Employee Detail for employee "+(i+1)); emp[i].get_data(); } for(i=0;i<=2;i++) { System.out.print("\nEmployee Details for employee "+(i+1)); emp[i].display(); } System.out.println(); } }
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