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Bai1/Bai1/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

Bai1/Bai1/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Bai1</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+	<filteredResources>
+		<filter>
+			<id>1671125272454</id>
+			<name></name>
+			<type>30</type>
+			<matcher>
+				<id>org.eclipse.core.resources.regexFilterMatcher</id>
+				<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
+</projectDescription>

Bai1/Bai1/.settings/org.eclipse.jdt.core.prefs

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+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.release=disabled
+org.eclipse.jdt.core.compiler.source=1.8

Bai1/Bai1/src/Class/PhanSo.java

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+package Class;
+
+import java.util.Scanner;
+
+public class PhanSo {
+	// thuoc tinh
+	private int tuSo;
+	private int mauSo;
+
+	// phuong thuc
+	// ham khoi tao khong doi so
+	public PhanSo() {
+		tuSo = 0;
+		mauSo = 1;
+	}
+
+	// ham khoi tao co doi so
+	public PhanSo(int tuSo, int mauSo) {
+		this.tuSo = tuSo;
+		this.mauSo = mauSo;
+	}
+
+	// ham nhap phan so
+	public void nhapPS(Scanner sc) {
+		int a;
+		int b;
+
+		do {
+			System.out.print("\tNhap vao tu so: ");
+			a = sc.nextInt();
+
+			System.out.print("\tNhap vao mau so: ");
+			b = sc.nextInt();
+
+			// kiem tra
+			if (b == 0) {
+				System.out.println("Mau so khong duoc bang 0. Hay nhap lai!");
+			} else {
+				tuSo = a;
+				mauSo = b;
+			}
+		} while (b == 0);
+	}
+
+	// ham hien thi
+	public void hienThiPS() {
+		if (tuSo * mauSo < 0) {
+			System.out.println("\t-" + Math.abs(tuSo) + "/" + Math.abs(mauSo));
+		} else {
+			System.out.println("\t" + Math.abs(tuSo) + "/" + Math.abs(mauSo));
+		}
+	}
+
+	// ham cong
+	public PhanSo congPS(PhanSo ps2) {
+		int a = tuSo * ps2.mauSo + ps2.tuSo * mauSo;
+		int b = mauSo * ps2.mauSo;
+
+		return new PhanSo(a, b);
+	}
+
+	// ham tru
+	public PhanSo truPS(PhanSo ps2) {
+		int a = tuSo * ps2.mauSo - ps2.tuSo * mauSo;
+		int b = mauSo * ps2.mauSo;
+
+		return new PhanSo(a, b);
+	}
+
+	// ham nhan
+	public PhanSo nhanPS(PhanSo ps2) {
+		int a = tuSo * ps2.tuSo;
+		int b = mauSo * ps2.mauSo;
+
+		return new PhanSo(a, b);
+	}
+
+	// ham chia
+	public PhanSo chiaPS(PhanSo ps2) {
+		int a = tuSo * ps2.mauSo;
+		int b = mauSo * ps2.tuSo;
+
+		return new PhanSo(a, b);
+	}
+
+	// ham tim uscln
+	private int timUSCLN(int a, int b) {
+		int r = a % b;
+
+		while (r != 0) {
+			a = b;
+			b = r;
+			r = a % b;
+		}
+
+		return b;
+	}
+
+	// ham kiem tra phan so toi gian hay chua
+	public boolean kiemTraToiGian() {
+		if (timUSCLN(tuSo, mauSo) == 1) {
+			return true;
+		}
+		return false;
+	}
+
+	// ham toi gian
+	public void toiGianPS() {
+		int x = timUSCLN(tuSo, mauSo);
+
+		tuSo /= x;
+		mauSo /= x;
+	}
+}

Bai1/Bai1/src/Test/TestClass.java

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+package Test;
+
+import java.util.Scanner;
+
+import Class.PhanSo;
+
+public class TestClass {
+
+	public static void main(String[] args) {
+		Scanner sc=new Scanner(System.in);
+		PhanSo ps1=new PhanSo();
+		PhanSo ps2=new PhanSo();
+		PhanSo psTong =new PhanSo();
+
+		// nhap phan so
+		System.out.println("Nhap vao phan so thu nhat:");
+		ps1.nhapPS(sc);
+		System.out.println("Nhap vao phan so thu hai:");
+		ps2.nhapPS(sc);
+
+		// tinh tong 2 phan so
+		psTong=ps1.congPS(ps2);
+
+		// hien thi phan so
+		System.out.println("\nPhan so thu nhat la:");
+		ps1.hienThiPS();
+		System.out.println("\nPhan so thu hai la:");
+		ps2.hienThiPS();
+		System.out.println("\nPhan so tong la:");
+		psTong.hienThiPS();
+
+		sc.close();
+	}
+
+}

Bai10/Bai10/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

Bai10/Bai10/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Bai10</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+	<filteredResources>
+		<filter>
+			<id>1671125272482</id>
+			<name></name>
+			<type>30</type>
+			<matcher>
+				<id>org.eclipse.core.resources.regexFilterMatcher</id>
+				<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
+</projectDescription>

Bai10/Bai10/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,12 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.release=disabled
+org.eclipse.jdt.core.compiler.source=1.8

Bai10/Bai10/src/BuildClass/BienLai.java

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+package BuildClass;
+
+import java.util.Scanner;
+
+public class BienLai extends KhachHang {
+	// Thuoc tinh
+	private int chiSoMoi;
+	private int chiSoCu;
+	private double tien;
+
+	// Phuong thuc
+	// Ham khoi tao khong doi so
+	public BienLai() {
+
+	}
+
+	// Ham khoi tao co doi so
+	public BienLai(int chiSoMoi, int chiSoCu, double tien) {
+		this.chiSoMoi = chiSoMoi;
+		this.chiSoCu = chiSoCu;
+		this.tien = tien;
+	}
+
+	public BienLai(String tenChuHo, int chiSoMoi, int chiSoCu, double tien) {
+		this.tenChuHo = tenChuHo;
+		this.chiSoMoi = chiSoMoi;
+		this.chiSoCu = chiSoCu;
+		this.tien = tien;
+	}
+
+	// Ham nhap
+	public void nhapThongTin(Scanner sc) {
+		super.nhapThongTin(sc);
+		System.out.print("\tNhap chi so moi: ");
+		chiSoMoi = sc.nextInt();
+		sc.nextLine();
+		System.out.print("\tNhap chi so cu: ");
+		chiSoCu = sc.nextInt();
+		sc.nextLine();
+		tien = (chiSoMoi - chiSoCu) * 750;
+	}
+
+	// Ham hien thi
+	public void hienThiThongTin() {
+		super.hienThiThongTin();
+		System.out.println("\tChi so moi: " + chiSoMoi);
+		System.out.println("\tChi so cu: " + chiSoCu);
+		System.out.println("\tTien: : " + tien);
+	}
+}

Bai10/Bai10/src/BuildClass/KhachHang.java

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+package BuildClass;
+
+import java.util.Scanner;
+
+public class KhachHang {
+	// Thuoc tinh
+	protected String tenChuHo;
+	protected int soNha;
+	protected String maCongTo;
+
+	// Phuong thuc
+	// Ham khoi tao khong doi so
+	public KhachHang() {
+
+	}
+
+	// Ham khoi tao co doi so
+	public KhachHang(String tenChuHo, int soNha, String maCongTo) {
+		this.tenChuHo = tenChuHo;
+		this.soNha = soNha;
+		this.maCongTo = maCongTo;
+	}
+
+	// Ham nhap
+	public void nhapThongTin(Scanner sc) {
+		System.out.print("\tNhap ten chu ho: ");
+		tenChuHo = sc.nextLine();
+		System.out.print("\tNhap so nha: ");
+		soNha = sc.nextInt();
+		sc.nextLine();
+		System.out.print("\tNhap ma cong to: ");
+		maCongTo = sc.nextLine();
+	}
+
+	// Hm hien thi
+	public void hienThiThongTin() {
+		System.out.println("\tTen chu ho: " + tenChuHo);
+		System.out.println("\tSo nha: " + soNha);
+		System.out.println("\tMa cong to: " + maCongTo);
+	}
+}